{"as_of":"2026-08-19T07:24:00Z","caps":{"database_statements":6,"inbound":100,"outbound":100},"context_digest":"sha256:b88ad6891b67f3798579c00d83cba78617b4dfc8d7e35057a9a26a8334368ba2","coverage":[{"denominator":110,"lane":"reference_resolution","note":"Typed states for the displayed outbound observations.","records_observed":100,"source":"paper_references, paper_reference_links","source_observed_at":"2026-08-08T12:54:38.299220Z","state":"measured"},{"denominator":100,"lane":"standing_notices","note":"One-hop event checks from named stored sources.","records_observed":100,"source":"scholarly_work_events, retraction_status_cache","source_observed_at":"2026-08-19T06:32:44.657259+00:00","state":"measured"},{"denominator":0,"lane":"inbound_itemization","note":"Pith citing papers itemized under the disclosed page cap.","records_observed":0,"source":"paper_references, paper_reference_links","source_observed_at":null,"state":"measured"},{"denominator":1,"lane":"external_citation_measurements","note":"A source-named dated measurement, never combined with another source.","records_observed":0,"source":"cited_works","source_observed_at":null,"state":"measured"}],"external_citation_measurements":[],"inbound":[],"links":{"evidence":"/evidence","html":"/paper/2608.05453/citation-record","integrity":"/paper/2608.05453/integrity","json":"/paper/2608.05453/citation-record.json","paper":"/paper/2608.05453"},"outbound":[{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-08T12:54:37.820210Z","title":null,"venue":null,"work_id":null,"year":null},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":1,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:37.820210Z"},"links":{"citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:3dcd114efbe0effd69fbdf8f0fd1294a3d5cdd71e2d2e4810cd9b713e4953e50","observation_id":"8335ba63-b67e-494a-bcde-a4501527ecc9","resolution":{"observed_at":"2026-08-08T12:54:37.820210Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"astro-ph/0304279","last_updated":"2003-04-15T11:40:15Z","snapshot_observed_at":"2026-08-10T14:01:22.511314Z","submitted_at":"2003-04-15T11:40:15Z","title":"Uncovering the Beast: Discovery of Embedded Massive Stellar Clusters in W49A","version":1},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"astro-ph/0304279","snapshot_observed_at":"2026-08-08T12:54:37.826014Z","title":", keywords =","venue":null,"work_id":null,"year":null},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":2,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:37.826014Z"},"links":{"cited_paper":"/paper/astro-ph/0304279","citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:799c24fa6b9bfa4fd6d755e2887c54991de78db34be6aa421e3619644567916c","observation_id":"8a733b8f-1158-47b3-851f-d952c92bec49","resolution":{"observed_at":"2026-08-08T12:54:37.826014Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-08T12:54:37.831191Z","title":", keywords =","venue":null,"work_id":null,"year":null},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":3,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:37.831191Z"},"links":{"citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:693f5496a44e911b279b70e2cba0db94e5ece4fb477aa75a35bed7c6166fbb75","observation_id":"9c7675a2-cddb-4630-a857-6ca9d2598bc3","resolution":{"observed_at":"2026-08-08T12:54:37.831191Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"2401.09203","last_updated":"2024-01-17T13:28:47Z","snapshot_observed_at":"2026-08-16T14:26:47.742825Z","submitted_at":"2024-01-17T13:28:47Z","title":"ALMA-IMF X -- The core population in the evolved W33-Main (G012.80) protocluster","version":1},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"2401.09203","snapshot_observed_at":"2026-08-08T12:54:37.836321Z","title":null,"venue":null,"work_id":null,"year":null},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":4,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:37.836321Z"},"links":{"cited_paper":"/paper/2401.09203","citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:f6bcc37e91700cc23ebb1dab7c401881cb61b6753b44dc18660b2a9672cc8f68","observation_id":"c762e345-558f-4212-bb78-65d14265a7b2","resolution":{"observed_at":"2026-08-08T12:54:37.836321Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-08T12:54:37.842838Z","title":", keywords =","venue":null,"work_id":null,"year":null},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":5,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:37.842838Z"},"links":{"citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:0c7e00c85ce3611eb504da3c990d167e666fc2027da9b5cc381c1e336169cd24","observation_id":"95de535f-9009-43db-a5e5-92baaf868501","resolution":{"observed_at":"2026-08-08T12:54:37.842838Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"2009.03901","last_updated":"2020-09-08T18:00:01Z","snapshot_observed_at":"2026-08-16T12:39:16.367184Z","submitted_at":"2020-09-08T18:00:01Z","title":"Which feedback mechanisms dominate in the high-pressure environment of the Central Molecular Zone?","version":1},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"2009.03901","snapshot_observed_at":"2026-08-08T12:54:37.847537Z","title":", keywords =","venue":null,"work_id":null,"year":2009},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":6,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:37.847537Z"},"links":{"cited_paper":"/paper/2009.03901","citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:a1853f8c0d1ecc4f0d93ce3a71fde2dd226f25680aa36dd2962df124fca7055e","observation_id":"10f751a5-e630-4a8e-8bbf-a0e67fc4b697","resolution":{"observed_at":"2026-08-08T12:54:37.847537Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"2007.11005","last_updated":"2020-09-03T11:40:53Z","snapshot_observed_at":"2026-08-10T19:42:13.141852Z","submitted_at":"2020-07-21T18:00:03Z","title":"LEGO II: A 3 mm molecular line study covering 100 pc of one of the most actively star-forming portions within the Milky Way Disc","version":3},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"2007.11005","snapshot_observed_at":"2026-08-08T12:54:37.852465Z","title":"A 3 mm molecular line study covering 100 pc of one of the most actively star-forming portions within the Milky Way disc","venue":null,"work_id":null,"year":2007},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":7,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:37.852465Z"},"links":{"cited_paper":"/paper/2007.11005","citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:5e6ef2cfb35a5ebd48e02fd4019142e23a067ab740a098118bd3b79d152ef707","observation_id":"7a2da900-d920-49f4-b5ff-be732e99220c","resolution":{"observed_at":"2026-08-08T12:54:37.852465Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"1001.2965","last_updated":"2010-01-25T15:58:50Z","snapshot_observed_at":"2026-08-15T05:28:52.836525Z","submitted_at":"2010-01-18T07:23:13Z","title":"A Universal Stellar Initial Mass Function? A Critical Look at Variations","version":2},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"1001.2965","snapshot_observed_at":"2026-08-08T12:54:37.857688Z","title":", keywords =","venue":null,"work_id":null,"year":null},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":8,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:37.857688Z"},"links":{"cited_paper":"/paper/1001.2965","citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:181f74fc9f5ab0b52c77751be8a2aa8c310cceb188b7557aefe06b9f666f1ab1","observation_id":"fff74de6-9658-4450-a8d9-f43bfac92d80","resolution":{"observed_at":"2026-08-08T12:54:37.857688Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-08T12:54:37.862971Z","title":", keywords =","venue":null,"work_id":null,"year":null},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":9,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:37.862971Z"},"links":{"citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:29613d6e5601f1e91825f8b4420a827ee8dc3a455998aa803c8d8f6bf7e8fdb9","observation_id":"6b11ee8d-c8f3-43e5-8a18-91c2741680f0","resolution":{"observed_at":"2026-08-08T12:54:37.862971Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"1808.00454","last_updated":"2018-09-19T17:17:10Z","snapshot_observed_at":"2026-08-16T23:31:28.642720Z","submitted_at":"2018-07-31T21:54:54Z","title":"A Multiwavelength Look at Galactic Massive Star Forming Regions","version":2},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"1808.00454","snapshot_observed_at":"2026-08-08T12:54:37.867488Z","title":", keywords =","venue":null,"work_id":null,"year":null},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":10,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:37.867488Z"},"links":{"cited_paper":"/paper/1808.00454","citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:1e994f4305f0b41d35aa0620903be9d48ca2103d2a7d599c7e8dfe190a44eacb","observation_id":"6bd0ce70-e063-4dbb-8bc7-19bb9e38efec","resolution":{"observed_at":"2026-08-08T12:54:37.867488Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-08T12:54:37.872332Z","title":null,"venue":null,"work_id":null,"year":null},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":11,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:37.872332Z"},"links":{"citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:68eaa266dfd003f283dc3be98ae81433583c3283226687eb3f0704cb43ee2dce","observation_id":"0c9f5c5c-7dc3-4565-892e-3c1e907a3925","resolution":{"observed_at":"2026-08-08T12:54:37.872332Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-08T12:54:37.876678Z","title":", keywords =","venue":null,"work_id":null,"year":2003},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":12,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:37.876678Z"},"links":{"citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:5b016201e3ad68f0326029870705faee9ee8eee661cb533b3954cb2662b44b92","observation_id":"62d8bab1-aee7-43d6-b4eb-db630aeb6cfe","resolution":{"observed_at":"2026-08-08T12:54:37.876678Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"2210.02276","last_updated":"2022-10-05T14:00:01Z","snapshot_observed_at":"2026-08-17T00:37:06.844112Z","submitted_at":"2022-10-05T14:00:01Z","title":"CASA, the Common Astronomy Software Applications for Radio Astronomy","version":1},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"2210.02276","snapshot_observed_at":"2026-08-08T12:54:37.881326Z","title":", keywords =","venue":null,"work_id":null,"year":null},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":13,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:37.881326Z"},"links":{"cited_paper":"/paper/2210.02276","citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:07e9cd4100f0cb989d32a657fa84e540694cd490830d2208500b00f32c52746f","observation_id":"338b3b44-69d0-4f64-8e2d-19cd1445a0f3","resolution":{"observed_at":"2026-08-08T12:54:37.881326Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"1506.01681","last_updated":"2015-08-11T20:44:40Z","snapshot_observed_at":"2026-08-14T22:45:45.229802Z","submitted_at":"2015-06-04T19:01:40Z","title":"PARSEC evolutionary tracks of massive stars up to $350 M_\\odot$ at metallicities 0.0001$\\leq Z \\leq$0.04","version":3},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"1506.01681","snapshot_observed_at":"2026-08-08T12:54:37.886042Z","title":", keywords =","venue":null,"work_id":null,"year":null},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":14,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:37.886042Z"},"links":{"cited_paper":"/paper/1506.01681","citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:7e68da469387c174ab25b9bc608e4a051905ade87ef67801f3f5eeaf733de70b","observation_id":"82df860f-4136-47fa-a5ac-fadc58ab1fd7","resolution":{"observed_at":"2026-08-08T12:54:37.886042Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"2404.03858","last_updated":"2024-04-05T01:40:58Z","snapshot_observed_at":"2026-08-18T00:49:54.448034Z","submitted_at":"2024-04-05T01:40:58Z","title":"INvestigations of massive Filaments ANd sTar formation (INFANT). I. Core Identification and Core Mass Function","version":1},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"2404.03858","snapshot_observed_at":"2026-08-08T12:54:37.890470Z","title":null,"venue":null,"work_id":null,"year":null},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":15,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:37.890470Z"},"links":{"cited_paper":"/paper/2404.03858","citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:a187b4e34d83b1f91dadaa69f3d2947833e26f8501a53057fc1da20e3f813a52","observation_id":"bac15aeb-2cd0-4a94-a218-2cc5ef98c691","resolution":{"observed_at":"2026-08-08T12:54:37.890470Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-08T12:54:37.894944Z","title":", keywords =","venue":null,"work_id":null,"year":null},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":16,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:37.894944Z"},"links":{"citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:562dba50985643589cf8f53118013019cb036f1fe930965b8ac04c7127551ea3","observation_id":"de3fd71a-1cc5-4887-ac62-c49feeb0db92","resolution":{"observed_at":"2026-08-08T12:54:37.894944Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-08T12:54:37.899152Z","title":"SIAM Review , keywords =","venue":null,"work_id":null,"year":null},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":17,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:37.899152Z"},"links":{"citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:02027e7b7a1060471a8b72f12aae73fbc0c7391ed7ac974feb79a4c012a56b43","observation_id":"2e5bfc06-c58f-4013-a404-004fe11071ad","resolution":{"observed_at":"2026-08-08T12:54:37.899152Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"2503.05663","last_updated":"2025-03-07T18:24:03Z","snapshot_observed_at":"2026-08-17T00:44:38.489374Z","submitted_at":"2025-03-07T18:24:03Z","title":"ALMAGAL III. Compact source catalog: Fragmentation statistics and physical evolution of the core population","version":1},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"2503.05663","snapshot_observed_at":"2026-08-08T12:54:37.903544Z","title":"Compact source catalog: Fragmentation statistics and physical evolution of the core population","venue":null,"work_id":null,"year":null},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":18,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:37.903544Z"},"links":{"cited_paper":"/paper/2503.05663","citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:26e428de36a6e412f33b6eceb1d4837c8c4117d3c0204174433b88430d9e2ca9","observation_id":"30ae335e-cbb3-4b0f-9486-b8dac7b799a7","resolution":{"observed_at":"2026-08-08T12:54:37.903544Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-08T12:54:37.908100Z","title":"Astrophysics in the Far Ultraviolet: Five Years of Discovery with FUSE , year = 2006, editor =","venue":null,"work_id":null,"year":2006},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":19,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:37.908100Z"},"links":{"citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:e63f48c267c71b271bbc6de935b27eb87bbb63438e14569ad1159a2c21971521","observation_id":"1dd5d746-c3ef-4b4f-8e6a-f03b268dd7e6","resolution":{"observed_at":"2026-08-08T12:54:37.908100Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":"10.1086/304119","metadata_source":"openalex","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-10T05:30:23.456663Z","title":", keywords =","venue":"The Astrophysical Journal","work_id":"6d478959-9372-4eac-86bd-cbdd2dcbb098","year":null},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":20,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:37.912620Z"},"links":{"citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:806f573d69833bec0baaf2b08f5d321792ced3f77c9cfb525c63f9bdee976b84","observation_id":"9059ac84-219c-47bb-a258-956f516f2ffe","resolution":{"observed_at":"2026-08-08T12:54:38.619205Z","resolver_source":"doi","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-19T06:32:44.657259+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-19T06:32:44.657259+00:00","source":"crossref"},{"observed_at":"2026-08-19T06:32:39.956319+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":"10.1086/309315","metadata_source":"openalex","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-10T05:30:23.456663Z","title":", keywords =","venue":"The Astrophysical Journal","work_id":"e4b29798-31ac-4692-a00c-d4b5c44a0377","year":null},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":21,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:37.917571Z"},"links":{"citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:7fa404c2ea084800319dc917291f3f94e6100c531c9a0a5f31094bcde553b178","observation_id":"093a213c-7d98-4baa-82e4-4b4de4155013","resolution":{"observed_at":"2026-08-08T12:54:38.604061Z","resolver_source":"doi","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-19T06:32:44.657259+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-19T06:32:44.657259+00:00","source":"crossref"},{"observed_at":"2026-08-19T06:32:39.956319+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":"10.3847/2041-8213/aad631","metadata_source":"openalex","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-10T05:30:23.456663Z","title":", keywords =","venue":"The Astrophysical Journal Letters","work_id":"d38c16e5-3c12-4001-aada-5d74c50a4142","year":null},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":22,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:37.922310Z"},"links":{"citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:0754687477716d3e3a5cb1c0d8a2f573057406b87b1fd3a67d1246956a3dc04f","observation_id":"7377a790-250d-4e21-9251-b60173e4c622","resolution":{"observed_at":"2026-08-08T12:54:38.589306Z","resolver_source":"doi","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-19T06:32:44.657259+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-19T06:32:44.657259+00:00","source":"crossref"},{"observed_at":"2026-08-19T06:32:39.956319+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"2010.04656","last_updated":"2020-10-09T15:57:34Z","snapshot_observed_at":"2026-08-16T19:14:39.472148Z","submitted_at":"2020-10-09T15:57:34Z","title":"Time-Variable Radio Recombination Line Emission in W49A","version":1},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"2010.04656","snapshot_observed_at":"2026-08-08T12:54:37.926754Z","title":", keywords =","venue":null,"work_id":null,"year":2010},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":23,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:37.926754Z"},"links":{"cited_paper":"/paper/2010.04656","citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:519cadb3b79376c571c765dda69591d0bc775323b789c0b4d9cc169540d02c0d","observation_id":"c3c85c8a-1cee-41f2-bb49-677783833dd6","resolution":{"observed_at":"2026-08-08T12:54:37.926754Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"astro-ph/0504230","last_updated":"2005-04-10T14:20:42Z","snapshot_observed_at":"2026-07-07T00:49:48.159367Z","submitted_at":"2005-04-10T14:20:42Z","title":"Morphologies of Ultracompact HII Regions in W49A and Sgr B2: Prevalence of Shells and a Modified Classification Scheme","version":1},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"astro-ph/0504230","snapshot_observed_at":"2026-08-08T12:54:37.932386Z","title":", keywords =","venue":null,"work_id":null,"year":null},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":24,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:37.932386Z"},"links":{"cited_paper":"/paper/astro-ph/0504230","citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:67b4aca270f04fd0632fd2031a6e7fa9cb773820645840b3a972b121185db19a","observation_id":"54178bad-ad54-45b2-adb9-7d6ad35b1e20","resolution":{"observed_at":"2026-08-08T12:54:37.932386Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"2111.01859","last_updated":"2021-11-02T19:28:34Z","snapshot_observed_at":"2026-08-18T05:21:19.200911Z","submitted_at":"2021-11-02T19:28:34Z","title":"Surveying the Giant HII Regions of the Milky Way with SOFIA: III. W49A","version":1},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"2111.01859","snapshot_observed_at":"2026-08-08T12:54:37.937475Z","title":null,"venue":null,"work_id":null,"year":null},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":25,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:37.937475Z"},"links":{"cited_paper":"/paper/2111.01859","citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:1660cd1f9058641834a8c1cf84d3c5960195099f6515589edf86a09d4f7ce4ab","observation_id":"ccf8395e-5901-499e-a603-055c4b0df0ab","resolution":{"observed_at":"2026-08-08T12:54:37.937475Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-08T12:54:37.942921Z","title":null,"venue":null,"work_id":null,"year":null},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":26,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:37.942921Z"},"links":{"citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:ed726182bf24b8647657da024a0bd4e47eb58bd3778d6db41d5a21e2a0e026a6","observation_id":"a9ed9332-978e-4447-bb20-ac4888642088","resolution":{"observed_at":"2026-08-08T12:54:37.942921Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-08T12:54:37.947816Z","title":null,"venue":null,"work_id":null,"year":null},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":27,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:37.947816Z"},"links":{"citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:39acfbba3d6fdda5b71b1703edd4c3348c809f4891519d3939b95bc1da63a973","observation_id":"64ec7337-135e-42a2-aaca-c778b5835027","resolution":{"observed_at":"2026-08-08T12:54:37.947816Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":"10.1086/173396","metadata_source":"openalex","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-10T05:30:23.456663Z","title":", keywords =","venue":"The Astrophysical Journal","work_id":"874270c8-a7a3-4d69-80d4-23443a945c47","year":null},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":28,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:37.952348Z"},"links":{"citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:f18c05edc08ab4912abfa5313a2bd02035714f55a2bf1d55939c3c9229bfd093","observation_id":"9f484f0b-175d-451d-939d-c20cd4ba59c6","resolution":{"observed_at":"2026-08-08T12:54:38.574446Z","resolver_source":"doi","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-19T06:32:44.657259+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-19T06:32:44.657259+00:00","source":"crossref"},{"observed_at":"2026-08-19T06:32:39.956319+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"2407.07359","last_updated":"2024-07-10T04:33:17Z","snapshot_observed_at":"2026-08-16T13:35:34.499840Z","submitted_at":"2024-07-10T04:33:17Z","title":"ALMA-IMF XIV: Free-Free Templates Derived from H$41\\alpha$ and Ionized Gas Content in Fifteen Massive Protoclusters","version":1},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"2407.07359","snapshot_observed_at":"2026-08-08T12:54:37.957561Z","title":null,"venue":null,"work_id":null,"year":null},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":29,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:37.957561Z"},"links":{"cited_paper":"/paper/2407.07359","citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:d664cce2b78ac1bcced7c311d3b9f5195e14563648c400a32299c8b1617ab17a","observation_id":"b08e6832-314f-4717-b534-4ee73e56bacc","resolution":{"observed_at":"2026-08-08T12:54:37.957561Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"1309.4129","last_updated":"2014-01-09T14:57:54Z","snapshot_observed_at":"2026-08-15T00:02:58.927145Z","submitted_at":"2013-09-16T22:18:26Z","title":"MUSCLE W49 : A Multi-Scale Continuum and Line Exploration of the Most Luminous Star Formation Region in the Milky Way. I. Data and The Mass Structure of the Giant Molecular Cloud","version":2},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"1309.4129","snapshot_observed_at":"2026-08-08T12:54:37.963035Z","title":null,"venue":null,"work_id":null,"year":null},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":30,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:37.963035Z"},"links":{"cited_paper":"/paper/1309.4129","citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:f9858c6ddd0f455d484d25f78b7ab1e53d086810fd426f655ddfcca2255438d3","observation_id":"4b9998fe-758c-4e88-bbb8-1d1aad7e63e9","resolution":{"observed_at":"2026-08-08T12:54:37.963035Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"2212.05633","last_updated":"2022-12-11T23:58:59Z","snapshot_observed_at":"2026-08-16T16:09:26.016874Z","submitted_at":"2022-12-11T23:58:59Z","title":"Clustered Formation of Massive Stars within an Ionized Rotating Disk","version":1},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"2212.05633","snapshot_observed_at":"2026-08-08T12:54:37.967725Z","title":", keywords =","venue":null,"work_id":null,"year":null},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":31,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:37.967725Z"},"links":{"cited_paper":"/paper/2212.05633","citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:c87c72e05b802b6ee387713e156672b1187ac8e46d45e64ea6a4e621982cf8a2","observation_id":"4ab1731b-57b8-4ff2-9cd8-290ad340a106","resolution":{"observed_at":"2026-08-08T12:54:37.967725Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"1906.05649","last_updated":"2019-12-09T17:42:13Z","snapshot_observed_at":"2026-08-17T17:31:06.221272Z","submitted_at":"2019-06-13T13:05:55Z","title":"When H II Regions are Complicated: Considering Perturbations from Winds, Radiation Pressure, and Other Effects","version":2},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"1906.05649","snapshot_observed_at":"2026-08-08T12:54:37.972454Z","title":", keywords =","venue":null,"work_id":null,"year":1906},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":32,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:37.972454Z"},"links":{"cited_paper":"/paper/1906.05649","citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:2201e44cc1cd6a1b0f527196ce58c75ea4f97202d02f4fe146cf68ea2d85dfae","observation_id":"d04de4f3-f3f3-4f51-ad5f-ac9bd5eaab16","resolution":{"observed_at":"2026-08-08T12:54:37.972454Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"2004.09555","last_updated":"2020-04-22T15:22:27Z","snapshot_observed_at":"2026-07-06T09:13:49.452689Z","submitted_at":"2020-04-20T18:17:56Z","title":"The MUSTANG-2 Galactic Plane Survey (MGPS90) pilot","version":2},"cited_work":{"arxiv_id":"2004.09555","doi":null,"metadata_source":"pith","pith_arxiv_id":"2004.09555","snapshot_observed_at":"2026-08-08T12:54:40.785192Z","title":"The MUSTANG-2 Galactic Plane Survey (MGPS90) pilot","venue":"astro-ph.GA","work_id":"41a0a3cc-fc61-417e-96e2-2d8c315cdb94","year":2020},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":33,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:37.978384Z"},"links":{"cited_paper":"/paper/2004.09555","citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:1d5e9e927783bd6142660cc6a20126c8faed2870fdce93635ee77e8ef882aab3","observation_id":"3cde216c-713c-4b4b-a289-067ab2bf1124","resolution":{"observed_at":"2026-08-08T12:54:40.790527Z","resolver_source":"local_arxiv","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-19T06:32:44.657259+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-19T06:32:44.657259+00:00","source":"crossref"},{"observed_at":"2026-08-19T06:32:39.956319+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-08T12:54:37.983335Z","title":null,"venue":null,"work_id":null,"year":null},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":34,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:37.983335Z"},"links":{"citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:de965668e836370cdb41ca8a937fd4368dc795124748e8f69f34ca8b198ddf58","observation_id":"d8c32b6f-d0b3-4ef6-81d4-0d8f9aa12086","resolution":{"observed_at":"2026-08-08T12:54:37.983335Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"1605.09402","last_updated":"2016-06-19T17:43:55Z","snapshot_observed_at":"2026-08-14T21:55:03.003883Z","submitted_at":"2016-05-30T20:10:31Z","title":"Toward gas exhaustion in the W51 high-mass protoclusters","version":3},"cited_work":{"arxiv_id":"1605.09402","doi":null,"metadata_source":"pith","pith_arxiv_id":"1605.09402","snapshot_observed_at":"2026-08-08T12:54:40.764654Z","title":"Toward gas exhaustion in the W51 high-mass protoclusters","venue":"astro-ph.GA","work_id":"858cb3b1-f088-4417-ba75-e7eab7ed80d9","year":2016},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":35,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:37.987906Z"},"links":{"cited_paper":"/paper/1605.09402","citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:fc176bb524e598b4c8c36f95afd9eff1bb11c61ae1625194e1709dac7fea5001","observation_id":"5cc8b996-ddd1-4b9d-b00c-dbc3584d17a0","resolution":{"observed_at":"2026-08-08T12:54:40.769662Z","resolver_source":"local_arxiv","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-19T06:32:44.657259+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-19T06:32:44.657259+00:00","source":"crossref"},{"observed_at":"2026-08-19T06:32:39.956319+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"arxiv_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-08T12:54:40.744068Z","title":", keywords =","venue":null,"work_id":"0f00133b-3ee2-494a-aa74-6c2c07796c1f","year":2011},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":36,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:37.993199Z"},"links":{"citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:44affa333c3fc16c16894481170faf6efe1045d66c4d19485cb08fa5b5e7d41e","observation_id":"8c6a0762-356f-4256-93a3-c0bdbecab10f","resolution":{"observed_at":"2026-08-08T12:54:40.748773Z","resolver_source":"arxiv_id_nonexistent","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-19T06:32:44.657259+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-19T06:32:44.657259+00:00","source":"crossref"},{"observed_at":"2026-08-19T06:32:39.956319+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"2312.07275","last_updated":"2024-05-02T10:14:44Z","snapshot_observed_at":"2026-08-16T14:35:30.012012Z","submitted_at":"2023-12-12T13:54:20Z","title":"The SARAO MeerKAT 1.3 GHz Galactic Plane Survey","version":2},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"2312.07275","snapshot_observed_at":"2026-08-08T12:54:37.998470Z","title":", keywords =","venue":null,"work_id":null,"year":null},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":37,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:37.998470Z"},"links":{"cited_paper":"/paper/2312.07275","citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:32b0f53c22f348908fe33b1c6ec0b3b96d7f044e7ded8da8029a3115eb7c78d7","observation_id":"d60ec115-0fc5-4b49-a0e1-af9a541906d2","resolution":{"observed_at":"2026-08-08T12:54:37.998470Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-08T12:54:38.003122Z","title":"Protostars and Planets V , year = 2007, editor =","venue":null,"work_id":null,"year":2007},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":38,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:38.003122Z"},"links":{"citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:79bf68ecf8d2ed7108a0100ffc7eec244867aa9d7a893facd5c90c8724478887","observation_id":"1757e66a-91d2-4751-b860-e8a4d5ca9ca2","resolution":{"observed_at":"2026-08-08T12:54:38.003122Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-08T12:54:38.007746Z","title":", keywords =","venue":null,"work_id":null,"year":null},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":39,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:38.007746Z"},"links":{"citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:e4285c692521232b27710a850e347f7a4561b597a164c3e0228af19619837dff","observation_id":"b87046a6-a1d4-47d6-9f16-3ba4c6105e88","resolution":{"observed_at":"2026-08-08T12:54:38.007746Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"astro-ph/0409410","last_updated":"2004-09-16T19:53:31Z","snapshot_observed_at":"2026-08-12T06:41:32.382601Z","submitted_at":"2004-09-16T19:53:31Z","title":"Massive Star Formation in the W49 Giant Molecular Cloud: Implications for the Formation of Massive Star Clusters","version":1},"cited_work":{"arxiv_id":"astro-ph/0409410","doi":null,"metadata_source":"pith","pith_arxiv_id":"astro-ph/0409410","snapshot_observed_at":"2026-08-08T12:54:40.570456Z","title":"Massive Star Formation in the W49 Giant Molecular Cloud: Implications for the Formation of Massive Star Clusters","venue":"astro-ph","work_id":"2f6efdfe-5409-40e0-9a8d-d1d5f828f74d","year":2004},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":40,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:38.012468Z"},"links":{"cited_paper":"/paper/astro-ph/0409410","citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:aee5efe07999aa25612721f22e82e769be4f4c96e21917a8c6cb4119022374a0","observation_id":"518e4bcc-baa4-41e4-a9a5-eca465bdd2df","resolution":{"observed_at":"2026-08-08T12:54:40.575741Z","resolver_source":"local_arxiv","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-19T06:32:44.657259+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-19T06:32:44.657259+00:00","source":"crossref"},{"observed_at":"2026-08-19T06:32:39.956319+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"0806.4122","last_updated":"2008-06-25T15:01:44Z","snapshot_observed_at":"2026-08-15T10:12:33.553882Z","submitted_at":"2008-06-25T15:01:44Z","title":"Evolution of Massive Protostars with High Accretion Rates","version":1},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"0806.4122","snapshot_observed_at":"2026-08-08T12:54:38.017289Z","title":", keywords =","venue":null,"work_id":null,"year":null},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":41,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:38.017289Z"},"links":{"cited_paper":"/paper/0806.4122","citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:c4e3483b6bded17def02996c6237f0c39537bb47afd69e176e0705d4202b7ccc","observation_id":"e695ad25-5711-49b1-96cf-764160c1c25f","resolution":{"observed_at":"2026-08-08T12:54:38.017289Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"1005.2827","last_updated":"2010-05-17T08:03:52Z","snapshot_observed_at":"2026-08-15T05:18:57.627195Z","submitted_at":"2010-05-17T08:03:52Z","title":"Evolution of Massive Protostars via Disk Accretion","version":1},"cited_work":{"arxiv_id":"1005.2827","doi":null,"metadata_source":"pith","pith_arxiv_id":"1005.2827","snapshot_observed_at":"2026-08-08T12:54:40.534864Z","title":"Evolution of Massive Protostars via Disk Accretion","venue":"astro-ph.SR","work_id":"cfb7461a-9755-4992-b0c5-5c9c03871e8f","year":2010},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":42,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:38.022351Z"},"links":{"cited_paper":"/paper/1005.2827","citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:e99b5a8366f51789792770fe313db637d656bba9dfb3976ddafcd633b4e1024f","observation_id":"69e84f7d-92d7-422e-9b3d-7d6a44b6f489","resolution":{"observed_at":"2026-08-08T12:54:40.539815Z","resolver_source":"local_arxiv","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-19T06:32:44.657259+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-19T06:32:44.657259+00:00","source":"crossref"},{"observed_at":"2026-08-19T06:32:39.956319+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"2406.13801","last_updated":"2024-06-19T20:06:34Z","snapshot_observed_at":"2026-08-16T13:41:20.309397Z","submitted_at":"2024-06-19T20:06:34Z","title":"A Census of the Deep Radio Sky with the VLA I: 10GHz Survey of the GOODS-N field","version":1},"cited_work":{"arxiv_id":"2406.13801","doi":null,"metadata_source":"pith","pith_arxiv_id":"2406.13801","snapshot_observed_at":"2026-08-08T12:54:40.513829Z","title":"A Census of the Deep Radio Sky with the VLA I: 10GHz Survey of the GOODS-N field","venue":"astro-ph.GA","work_id":"05ce44fb-cadb-4743-99e9-66d2882b81ab","year":2024},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":43,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:38.027236Z"},"links":{"cited_paper":"/paper/2406.13801","citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:93e5eb3898c9210f06f1f56532205213448809dff1b731d02a83cc3a88bd4f5d","observation_id":"fd032b61-59d1-45a9-8dd1-07624efb0304","resolution":{"observed_at":"2026-08-08T12:54:40.518850Z","resolver_source":"local_arxiv","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-19T06:32:44.657259+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-19T06:32:44.657259+00:00","source":"crossref"},{"observed_at":"2026-08-19T06:32:39.956319+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"1803.09334","last_updated":"2018-03-25T20:36:59Z","snapshot_observed_at":"2026-08-14T19:32:40.988827Z","submitted_at":"2018-03-25T20:36:59Z","title":"The Coordinated Radio and Infrared Survey for High-Mass Star Formation III. A catalogue of northern ultra-compact H II regions","version":1},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"1803.09334","snapshot_observed_at":"2026-08-08T12:54:38.032099Z","title":null,"venue":null,"work_id":null,"year":null},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":44,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:38.032099Z"},"links":{"cited_paper":"/paper/1803.09334","citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:6e9849e3ae6f2b4f4327387ca38789c0e96a4946f918bb1639e947344a57cfb6","observation_id":"ba3eca91-501f-4f90-b850-2dd7a160454c","resolution":{"observed_at":"2026-08-08T12:54:38.032099Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"astro-ph/0309131","last_updated":"2004-07-29T16:32:15Z","snapshot_observed_at":"2026-08-12T16:24:02.414864Z","submitted_at":"2003-09-04T18:35:33Z","title":"The Formation of Massive Stars by Accretion Through Trapped Hypercompact HII Regions","version":2},"cited_work":{"arxiv_id":"astro-ph/0309131","doi":null,"metadata_source":"pith","pith_arxiv_id":"astro-ph/0309131","snapshot_observed_at":"2026-08-08T12:54:40.475668Z","title":"The Formation of Massive Stars by Accretion Through Trapped Hypercompact HII Regions","venue":"astro-ph","work_id":"7903b6db-17f0-4ee3-9c69-552e2a3bb530","year":2003},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":45,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:38.037322Z"},"links":{"cited_paper":"/paper/astro-ph/0309131","citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:e6fed764e243c712a140791fcddfb738b47b80e523a6d45eee65a7ac48b9f5e1","observation_id":"dc3a835f-66b6-4c86-bdcb-09566cb68013","resolution":{"observed_at":"2026-08-08T12:54:40.480897Z","resolver_source":"local_arxiv","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-19T06:32:44.657259+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-19T06:32:44.657259+00:00","source":"crossref"},{"observed_at":"2026-08-19T06:32:39.956319+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"astro-ph/0510176","last_updated":"2005-10-06T14:01:08Z","snapshot_observed_at":"2026-08-15T16:46:50.213639Z","submitted_at":"2005-10-06T14:01:08Z","title":"Observations on the Formation of Massive Stars by Accretion","version":1},"cited_work":{"arxiv_id":"astro-ph/0510176","doi":null,"metadata_source":"pith","pith_arxiv_id":"astro-ph/0510176","snapshot_observed_at":"2026-08-08T12:54:40.454282Z","title":"Observations on the Formation of Massive Stars by Accretion","venue":"astro-ph","work_id":"0850233c-6e40-45d7-ab75-9b5fb1f4c373","year":2005},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":46,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:38.042172Z"},"links":{"cited_paper":"/paper/astro-ph/0510176","citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:a48cb3402864d56a2a70334e5a09828740e8be3ea88730381a2bb9a25c73d6d0","observation_id":"92449fb5-21db-4ca6-9b5a-f2f16824177f","resolution":{"observed_at":"2026-08-08T12:54:40.459259Z","resolver_source":"local_arxiv","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-19T06:32:44.657259+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-19T06:32:44.657259+00:00","source":"crossref"},{"observed_at":"2026-08-19T06:32:39.956319+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"astro-ph/0603856","last_updated":"2007-06-15T16:28:27Z","snapshot_observed_at":"2026-07-07T00:59:30.556373Z","submitted_at":"2006-03-31T16:49:18Z","title":"The formation of massive stars: accretion, disks and the development of hypercompact HII regions","version":3},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"astro-ph/0603856","snapshot_observed_at":"2026-08-08T12:54:38.046953Z","title":", keywords =","venue":null,"work_id":null,"year":null},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":47,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:38.046953Z"},"links":{"cited_paper":"/paper/astro-ph/0603856","citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:cebf625084978bc3f3948146c7e0a159a397b873c0cbf3c73e3b9e76d1940ac2","observation_id":"6cd9e9d6-13a9-4bd9-9f3d-2fc42ab59c21","resolution":{"observed_at":"2026-08-08T12:54:38.046953Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"0708.3388","last_updated":"2007-11-15T18:52:56Z","snapshot_observed_at":"2026-08-15T10:33:39.047813Z","submitted_at":"2007-08-24T19:18:38Z","title":"The Early Evolution of Massive Stars: Radio Recombination Line Spectra","version":2},"cited_work":{"arxiv_id":"0708.3388","doi":null,"metadata_source":"pith","pith_arxiv_id":"0708.3388","snapshot_observed_at":"2026-08-08T12:54:40.418073Z","title":"The Early Evolution of Massive Stars: Radio Recombination Line Spectra","venue":"astro-ph","work_id":"4bca2b48-d790-4fbe-a609-60564a1b6bda","year":2007},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":48,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:38.051530Z"},"links":{"cited_paper":"/paper/0708.3388","citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:eaf4e6b4b716df69b28cd60c2ce7b70749a7abad1c10beda8b60b1bcab2647c0","observation_id":"cc1942ab-a4c0-474e-a650-8f7d26acf749","resolution":{"observed_at":"2026-08-08T12:54:40.423197Z","resolver_source":"local_arxiv","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-19T06:32:44.657259+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-19T06:32:44.657259+00:00","source":"crossref"},{"observed_at":"2026-08-19T06:32:39.956319+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":"10.1051/0004-6361/201731727","metadata_source":"openalex","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-10T05:30:23.456663Z","title":null,"venue":"Astronomy and Astrophysics","work_id":"16c2685c-7b90-4649-9f0b-67dbcb043d9d","year":null},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":49,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:38.056254Z"},"links":{"citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:0a191629c8fdeed53a9f6da95bc153a0e7efb78aa91709e7d3e684abcd2fc41c","observation_id":"ee359b7c-7782-4b4f-9818-de1bf430f9b2","resolution":{"observed_at":"2026-08-08T12:54:38.550993Z","resolver_source":"doi","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-19T06:32:44.657259+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-19T06:32:44.657259+00:00","source":"crossref"},{"observed_at":"2026-08-19T06:32:39.956319+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"1804.10211","last_updated":"2018-04-26T18:00:05Z","snapshot_observed_at":"2026-08-14T19:21:30.108371Z","submitted_at":"2018-04-26T18:00:05Z","title":"First hydrodynamics simulations of radiation forces and photoionization feedback in massive star formation","version":1},"cited_work":{"arxiv_id":"1804.10211","doi":null,"metadata_source":"pith","pith_arxiv_id":"1804.10211","snapshot_observed_at":"2026-08-08T12:54:40.396495Z","title":"First hydrodynamics simulations of radiation forces and photoionization feedback in massive star formation","venue":"astro-ph.GA","work_id":"6f209108-7768-49e0-88bc-43aa84e352fd","year":2018},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":50,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:38.060893Z"},"links":{"cited_paper":"/paper/1804.10211","citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:b8cc97e6504e04ac0a87653fefab87f092c7181005a5bef8211f67551e4c40a9","observation_id":"84678e76-30a5-42c8-9163-edc68bee05c5","resolution":{"observed_at":"2026-08-08T12:54:40.401976Z","resolver_source":"local_arxiv","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-19T06:32:44.657259+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-19T06:32:44.657259+00:00","source":"crossref"},{"observed_at":"2026-08-19T06:32:39.956319+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"arxiv_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-08T12:54:40.374451Z","title":", keywords =","venue":null,"work_id":"38ce1184-79f8-4ac6-8644-046b741910da","year":2001},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":51,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:38.065808Z"},"links":{"citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:342d04c25222404e53e4255fc7254fa3509b082eab4f27188f7b04bf05b5c378","observation_id":"dc4ad9ff-7c0f-401b-9e33-f280da7e2c99","resolution":{"observed_at":"2026-08-08T12:54:40.379070Z","resolver_source":"arxiv_id_nonexistent","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-19T06:32:44.657259+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-19T06:32:44.657259+00:00","source":"crossref"},{"observed_at":"2026-08-19T06:32:39.956319+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-08T12:54:38.070449Z","title":null,"venue":null,"work_id":null,"year":null},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":52,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:38.070449Z"},"links":{"citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:fa263774f25d7240f53f3bb60a090ad35bdf8eb143133e7331033a19a81090da","observation_id":"fe2abdbc-77c2-48a1-9789-930aec659176","resolution":{"observed_at":"2026-08-08T12:54:38.070449Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-08T12:54:38.075174Z","title":"Massive Star Birth: A Crossroads of Astrophysics , year = 2005, editor =","venue":null,"work_id":null,"year":2005},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":53,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:38.075174Z"},"links":{"citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:5eb6bc01851f8b8a1313c02ffe1a7b070db2790ee7cbc2dc54918a01bfaec571","observation_id":"710c7d04-ae35-4331-9e3d-874b07682375","resolution":{"observed_at":"2026-08-08T12:54:38.075174Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-08T12:54:38.079771Z","title":"Encyclopedia of Astrophysics , year = 2026, volume =","venue":null,"work_id":null,"year":2026},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":54,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:38.079771Z"},"links":{"citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:9cee5780c6294cf88fa2d3e8424f6dcb9eca58340ea767a6ba2073c6a6e55c80","observation_id":"1f0f76db-03cb-4ca6-902d-5aea6d6ba8f0","resolution":{"observed_at":"2026-08-08T12:54:38.079771Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"astro-ph/0210157","last_updated":"2003-02-14T01:50:05Z","snapshot_observed_at":"2026-07-07T00:28:57.395976Z","submitted_at":"2002-10-07T17:48:13Z","title":"A Grid of NLTE Line-Blanketed Model Atmospheres of O-type Stars","version":2},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"astro-ph/0210157","snapshot_observed_at":"2026-08-08T12:54:38.084327Z","title":", keywords =","venue":null,"work_id":null,"year":null},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":55,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:38.084327Z"},"links":{"cited_paper":"/paper/astro-ph/0210157","citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:e82eba8a52533915a1ed42242b555cc440be42f9be1b68426a8ce31713332129","observation_id":"235be469-d107-423e-a3dd-86a1193fcf03","resolution":{"observed_at":"2026-08-08T12:54:38.084327Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"astro-ph/0611891","last_updated":"2006-11-29T14:12:43Z","snapshot_observed_at":"2026-07-07T01:05:02.944934Z","submitted_at":"2006-11-29T14:12:43Z","title":"A Grid of NLTE Line-Blanketed Model Atmospheres of Early B-type Stars","version":1},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"astro-ph/0611891","snapshot_observed_at":"2026-08-08T12:54:38.089157Z","title":", keywords =","venue":null,"work_id":null,"year":null},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":56,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:38.089157Z"},"links":{"cited_paper":"/paper/astro-ph/0611891","citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:b07480daa187ca942ae570de389c073771aecd19fd9f312742408e1699f4c7a7","observation_id":"b89cfce8-59d9-4b83-8436-5fc7ef6a8a8f","resolution":{"observed_at":"2026-08-08T12:54:38.089157Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"1606.07645","last_updated":"2016-06-27T02:27:25Z","snapshot_observed_at":"2026-08-15T06:30:10.371392Z","submitted_at":"2016-06-24T11:29:56Z","title":"Cloud Structure of Galactic OB Cluster Forming Regions from Combining Ground and Space Based Bolometric Observations","version":2},"cited_work":{"arxiv_id":"1606.07645","doi":null,"metadata_source":"pith","pith_arxiv_id":"1606.07645","snapshot_observed_at":"2026-08-08T12:54:40.085376Z","title":"Cloud Structure of Galactic OB Cluster Forming Regions from Combining Ground and Space Based Bolometric Observations","venue":"astro-ph.GA","work_id":"b9ee602e-5328-4a10-b94a-e02eb637abce","year":2016},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":57,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:38.094024Z"},"links":{"cited_paper":"/paper/1606.07645","citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:2019a6f4faf2fff114556cb2879f18a2095da9cb967b31131c22183bf003820a","observation_id":"1d844912-c05f-47e8-8878-f711dc6ca6dc","resolution":{"observed_at":"2026-08-08T12:54:40.090485Z","resolver_source":"local_arxiv","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-19T06:32:44.657259+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-19T06:32:44.657259+00:00","source":"crossref"},{"observed_at":"2026-08-19T06:32:39.956319+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"1808.07702","last_updated":"2018-12-05T00:29:55Z","snapshot_observed_at":"2026-08-14T18:37:59.083890Z","submitted_at":"2018-08-23T11:24:31Z","title":"Investigating fragmentation of gas structures in OB cluster-forming molecular clump G33.92+0.11 with 1000 AU resolution observations of ALMA","version":2},"cited_work":{"arxiv_id":"1808.07702","doi":null,"metadata_source":"pith","pith_arxiv_id":"1808.07702","snapshot_observed_at":"2026-08-08T12:54:40.062971Z","title":"Investigating fragmentation of gas structures in OB cluster-forming molecular clump G33.92+0.11 with 1000 AU resolution observations of ALMA","venue":"astro-ph.GA","work_id":"f5e8094e-7d7e-4495-92ae-278f7ac80f2e","year":2018},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":58,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:38.098832Z"},"links":{"cited_paper":"/paper/1808.07702","citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:453a50420274943a6c350e9e4b30beddc12410bae9cdc44ef27bd01989c57523","observation_id":"6992a277-1e55-4f07-b1e3-7654d165c634","resolution":{"observed_at":"2026-08-08T12:54:40.070162Z","resolver_source":"local_arxiv","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-19T06:32:44.657259+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-19T06:32:44.657259+00:00","source":"crossref"},{"observed_at":"2026-08-19T06:32:39.956319+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":"2105.03554","doi":null,"metadata_source":"arxiv_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-08T12:54:40.038213Z","title":"Catalogues of candidate hot molecular cores and hyper/ultra compact H II regions","venue":null,"work_id":"c80fa8fc-1e60-4bac-9d7a-39ca2f2ece0a","year":null},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":59,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:38.103498Z"},"links":{"citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:d44b7fa6aca26ab0a06413c6edc5e2ec1e2fdb4d4b622e044eef2629658f5cf3","observation_id":"b39c2fd6-20f2-4c6d-9a2e-dd4501242001","resolution":{"observed_at":"2026-08-08T12:54:40.045653Z","resolver_source":"arxiv_id","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-19T06:32:44.657259+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-19T06:32:44.657259+00:00","source":"crossref"},{"observed_at":"2026-08-19T06:32:39.956319+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"2407.18719","last_updated":"2024-07-26T13:10:32Z","snapshot_observed_at":"2026-08-16T13:30:47.291757Z","submitted_at":"2024-07-26T13:10:32Z","title":"ALMA-IMF XV: The core mass function in the high-mass star-formation regime","version":1},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"2407.18719","snapshot_observed_at":"2026-08-08T12:54:38.108119Z","title":"Core mass function in the high-mass star formation regime","venue":null,"work_id":null,"year":null},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":60,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:38.108119Z"},"links":{"cited_paper":"/paper/2407.18719","citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:d4558f6b7b824e8d4258c2c59216e87808933360534e86f3d1b2ca6a301e5cef","observation_id":"cd59258a-e826-42b6-b851-17edd635a0eb","resolution":{"observed_at":"2026-08-08T12:54:38.108119Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"1305.4485","last_updated":"2013-05-20T10:10:23Z","snapshot_observed_at":"2026-08-15T00:17:18.253997Z","submitted_at":"2013-05-20T10:10:23Z","title":"Evolution of Thermally Pulsing Asymptotic Giant Branch Stars I. The COLIBRI Code","version":1},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"1305.4485","snapshot_observed_at":"2026-08-08T12:54:38.113581Z","title":"The COLIBRI code","venue":null,"work_id":null,"year":null},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":61,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:38.113581Z"},"links":{"cited_paper":"/paper/1305.4485","citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:1dff02ec336813033a5df8b0e4ecc9fe55c767055d8d45f27fd376ce5993f9a9","observation_id":"9866ae98-3f78-40de-80ca-4fd3c8c06357","resolution":{"observed_at":"2026-08-08T12:54:38.113581Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"astro-ph/0503346","last_updated":"2005-03-16T15:14:50Z","snapshot_observed_at":"2026-07-07T00:49:04.277717Z","submitted_at":"2005-03-16T15:14:50Z","title":"A new calibration of stellar parameters of Galactic O stars","version":1},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"astro-ph/0503346","snapshot_observed_at":"2026-08-08T12:54:38.118944Z","title":", keywords =","venue":null,"work_id":null,"year":null},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":62,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:38.118944Z"},"links":{"cited_paper":"/paper/astro-ph/0503346","citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:03fc07d9229659f01f674584998b3b52740d4ea3031575ef05b2042ce50d36a2","observation_id":"6f0fcc3f-d5ed-43c1-a34e-deed1064ffcf","resolution":{"observed_at":"2026-08-08T12:54:38.118944Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"2208.07796","last_updated":"2022-08-19T03:09:23Z","snapshot_observed_at":"2026-08-16T16:38:53.396896Z","submitted_at":"2022-08-16T15:19:15Z","title":"The physical and chemical structure of Sagittarius B2 -- VI. UCHII regions in Sgr B2","version":3},"cited_work":{"arxiv_id":"2208.07796","doi":null,"metadata_source":"pith","pith_arxiv_id":"2208.07796","snapshot_observed_at":"2026-08-08T12:54:39.756487Z","title":"The physical and chemical structure of Sagittarius B2 -- VI. UCHII regions in Sgr B2","venue":"astro-ph.GA","work_id":"dca59476-7faa-4ff0-a311-ab20c89135d3","year":2022},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":63,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:38.123657Z"},"links":{"cited_paper":"/paper/2208.07796","citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:e115fc01e178d6c9663bffb30dfbc79cb309cd31c0d0475ba26756f1c7a60abe","observation_id":"0f2b4f33-9333-45e6-9823-1d8deff93c4a","resolution":{"observed_at":"2026-08-08T12:54:39.761698Z","resolver_source":"local_arxiv","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-19T06:32:44.657259+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-19T06:32:44.657259+00:00","source":"crossref"},{"observed_at":"2026-08-19T06:32:39.956319+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-08T12:54:38.128367Z","title":null,"venue":null,"work_id":null,"year":1967},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":64,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:38.128367Z"},"links":{"citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:84ce3726779cbe0b2ac2d942f026a0a02e444413a7792ba53c91fd455caf62fb","observation_id":"5ceb9ca4-3097-4982-9d83-fa4aadfd1fe9","resolution":{"observed_at":"2026-08-08T12:54:38.128367Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"2111.04929","last_updated":"2021-11-10T06:05:51Z","snapshot_observed_at":"2026-08-16T17:43:06.189207Z","submitted_at":"2021-11-09T03:22:47Z","title":"Star burst in W49N presumably induced by cloud-cloud collision","version":2},"cited_work":{"arxiv_id":"2111.04929","doi":null,"metadata_source":"pith","pith_arxiv_id":"2111.04929","snapshot_observed_at":"2026-08-08T12:54:39.735625Z","title":"Star burst in W49N presumably induced by cloud-cloud collision","venue":"astro-ph.GA","work_id":"985fea5a-2701-4e5a-8873-9c063a3c7449","year":2021},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":65,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:38.133120Z"},"links":{"cited_paper":"/paper/2111.04929","citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:82e7c3d95f04827180d7823d0076a19f218d5a5ef170a4eea771d1b04a131e8e","observation_id":"4d2f40e7-153d-4aac-8f29-11a42ec1fde1","resolution":{"observed_at":"2026-08-08T12:54:39.740715Z","resolver_source":"local_arxiv","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-19T06:32:44.657259+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-19T06:32:44.657259+00:00","source":"crossref"},{"observed_at":"2026-08-19T06:32:39.956319+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":"10.1093/pasj/61.1.39","metadata_source":"openalex","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-10T05:30:23.456663Z","title":", keywords =","venue":"Publications of the Astronomical Society of Japan","work_id":"f8d9b055-2aae-428f-9999-33b586944337","year":null},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":66,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:38.137888Z"},"links":{"citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:7cb182203de8290ab55f2f0f4f9c3728374b4ee3481dc63d407ea560a631ab6e","observation_id":"ec664656-99b4-4581-8e63-659a7a0c0556","resolution":{"observed_at":"2026-08-08T12:54:38.499291Z","resolver_source":"doi","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-19T06:32:44.657259+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-19T06:32:44.657259+00:00","source":"crossref"},{"observed_at":"2026-08-19T06:32:39.956319+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"2204.04617","last_updated":"2022-05-20T20:00:28Z","snapshot_observed_at":"2026-08-16T17:08:01.807221Z","submitted_at":"2022-04-10T07:01:47Z","title":"W49N MCN-a: a disk accreting massive protostar embedded in an early-phase hot molecular core","version":2},"cited_work":{"arxiv_id":"2204.04617","doi":null,"metadata_source":"pith","pith_arxiv_id":"2204.04617","snapshot_observed_at":"2026-08-08T12:54:39.714234Z","title":"W49N MCN-a: a disk accreting massive protostar embedded in an early-phase hot molecular core","venue":"astro-ph.GA","work_id":"1c4f2f8d-4309-460d-aeff-8a8b092aa5ac","year":2022},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":67,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:38.142630Z"},"links":{"cited_paper":"/paper/2204.04617","citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:5c408bebe77df4a26cc4ebd7f0004ef2aa902e5bd5b313c31cd5282a13be2bfe","observation_id":"1c5f2049-374a-4703-9b13-d1aa2b208897","resolution":{"observed_at":"2026-08-08T12:54:39.719422Z","resolver_source":"local_arxiv","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-19T06:32:44.657259+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-19T06:32:44.657259+00:00","source":"crossref"},{"observed_at":"2026-08-19T06:32:39.956319+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"1706.00118","last_updated":"2017-05-31T23:02:09Z","snapshot_observed_at":"2026-08-14T20:56:49.926753Z","submitted_at":"2017-05-31T23:02:09Z","title":"High-Mass Star and Massive Cluster Formation in the Milky Way","version":1},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"1706.00118","snapshot_observed_at":"2026-08-08T12:54:38.147577Z","title":", keywords =","venue":null,"work_id":null,"year":null},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":68,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:38.147577Z"},"links":{"cited_paper":"/paper/1706.00118","citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:8b4cc9627472c34ad9922cc24984625eac0b2660a7eed3c4d40f4cbb3495f80d","observation_id":"6a69bab3-8204-4f36-b290-a9bb6c438a39","resolution":{"observed_at":"2026-08-08T12:54:38.147577Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"1102.4702","last_updated":"2011-02-23T09:53:26Z","snapshot_observed_at":"2026-08-15T04:53:56.697863Z","submitted_at":"2011-02-23T09:53:26Z","title":"The Luminosity Functions and Timescales of MYSOs and Compact HII regions","version":1},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"1102.4702","snapshot_observed_at":"2026-08-08T12:54:38.152824Z","title":", keywords =","venue":null,"work_id":null,"year":null},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":69,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:38.152824Z"},"links":{"cited_paper":"/paper/1102.4702","citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:21cb3a0f896d41ec7682c0684ffa849afc66123cef7e3dc59dd033cb5888de2b","observation_id":"9ccb5f7c-8fa7-49f5-843f-b2ed2c115674","resolution":{"observed_at":"2026-08-08T12:54:38.152824Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"1804.02392","last_updated":"2018-04-06T12:21:00Z","snapshot_observed_at":"2026-08-14T19:28:36.247257Z","submitted_at":"2018-04-06T12:21:00Z","title":"The unexpectedly large proportion of high-mass star-forming cores in a Galactic mini-starburst","version":1},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"1804.02392","snapshot_observed_at":"2026-08-08T12:54:38.157535Z","title":"Nature Astronomy , keywords =","venue":null,"work_id":null,"year":null},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":70,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:38.157535Z"},"links":{"cited_paper":"/paper/1804.02392","citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:caf72c85b250d8cacecc06573c8a5bd68c7d5408f60a87659a86670e802bdfb4","observation_id":"3f8f8a18-80eb-4748-983c-231acf0b4c5c","resolution":{"observed_at":"2026-08-08T12:54:38.157535Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"2301.07238","last_updated":"2023-03-16T00:37:50Z","snapshot_observed_at":"2026-08-16T23:05:36.794340Z","submitted_at":"2023-01-18T00:28:09Z","title":"ALMA-IMF. V. Prestellar and protostellar core populations in the W43 cloud complex","version":2},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"2301.07238","snapshot_observed_at":"2026-08-08T12:54:38.162564Z","title":null,"venue":null,"work_id":null,"year":null},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":71,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:38.162564Z"},"links":{"cited_paper":"/paper/2301.07238","citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:1ace98422f9c4f54853566f7717f5ea48cc168c5a7d9e2eb105c4870068c2237","observation_id":"1c79517f-4d19-481e-8b02-cf8b99316ed8","resolution":{"observed_at":"2026-08-08T12:54:38.162564Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"2404.02250","last_updated":"2024-04-02T19:17:14Z","snapshot_observed_at":"2026-08-16T14:04:11.397523Z","submitted_at":"2024-04-02T19:17:14Z","title":"Core to ultracompact HII region evolution in the W49A massive protocluster","version":1},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"2404.02250","snapshot_observed_at":"2026-08-08T12:54:38.167130Z","title":", keywords =","venue":null,"work_id":null,"year":null},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":72,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:38.167130Z"},"links":{"cited_paper":"/paper/2404.02250","citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:dc58eb76297c0781707bea338f4bff4910a400233dcb68639a194526df8b8387","observation_id":"dd5a18ce-1ac9-4366-94e0-cfbfa4e93aa3","resolution":{"observed_at":"2026-08-08T12:54:38.167130Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"2009.10079","last_updated":"2020-12-08T16:58:54Z","snapshot_observed_at":"2026-08-15T06:12:36.745792Z","submitted_at":"2020-09-21T18:00:01Z","title":"Evolution of Stellar Feedback in HII Regions","version":2},"cited_work":{"arxiv_id":"2009.10079","doi":null,"metadata_source":"pith","pith_arxiv_id":"2009.10079","snapshot_observed_at":"2026-08-08T12:54:39.615295Z","title":"Evolution of Stellar Feedback in HII Regions","venue":"astro-ph.GA","work_id":"146fa2db-e14a-4750-9117-979a8afbd190","year":2020},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":73,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:38.171817Z"},"links":{"cited_paper":"/paper/2009.10079","citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:4a37654b7af3088d7a9030fa430946d79cff02e8029593bf601cf462d879d1c1","observation_id":"bf82283a-858b-47cf-8ddf-b47e7375b8d7","resolution":{"observed_at":"2026-08-08T12:54:39.620426Z","resolver_source":"local_arxiv","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-19T06:32:44.657259+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-19T06:32:44.657259+00:00","source":"crossref"},{"observed_at":"2026-08-19T06:32:39.956319+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-08T12:54:38.176445Z","title":null,"venue":null,"work_id":null,"year":null},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":74,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:38.176445Z"},"links":{"citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:e1b9774cafb671dc29b4b5dd2b0e7cb38176e66457c8113c004e3c3f3d21c096","observation_id":"0602b17c-dece-4dac-a87b-0adccae69983","resolution":{"observed_at":"2026-08-08T12:54:38.176445Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"2602.06196","last_updated":"2026-05-13T09:12:20Z","snapshot_observed_at":"2026-08-15T18:32:20.368525Z","submitted_at":"2026-02-05T21:11:27Z","title":"Compact HII Regions as Clocks of Massive-Star Formation: Evidence for Long Formation Timescales","version":2},"cited_work":{"arxiv_id":"2602.06196","doi":null,"metadata_source":"pith","pith_arxiv_id":"2602.06196","snapshot_observed_at":"2026-08-08T12:54:39.593802Z","title":"Compact HII Regions as Clocks of Massive-Star Formation: Evidence for Long Formation Timescales","venue":"astro-ph.SR","work_id":"26ab8e65-dd58-44ba-bd51-55098baede43","year":2026},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":75,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:38.180777Z"},"links":{"cited_paper":"/paper/2602.06196","citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:74e2e66425e52dd9cf5e6e5cbaffe94e0c052b8065c35887acd7d2843725c839","observation_id":"d3cbbdce-1e8e-4a83-b317-65e66087d5a3","resolution":{"observed_at":"2026-08-08T12:54:39.598939Z","resolver_source":"local_arxiv","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-19T06:32:44.657259+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-19T06:32:44.657259+00:00","source":"crossref"},{"observed_at":"2026-08-19T06:32:39.956319+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"1911.04465","last_updated":"2020-07-29T12:27:15Z","snapshot_observed_at":"2026-08-09T07:25:42.225109Z","submitted_at":"2019-11-11T18:59:47Z","title":"The Origin of Massive Stars: The Inertial-Inflow Model","version":3},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"1911.04465","snapshot_observed_at":"2026-08-08T12:54:38.185407Z","title":", keywords =","venue":null,"work_id":null,"year":1911},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":76,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:38.185407Z"},"links":{"cited_paper":"/paper/1911.04465","citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:29ca34c9e7ea2162d3e4667b543d51946044136564312e29d1a6d2f8e9ffc7df","observation_id":"d9245a64-9e5d-47e4-9545-e404ab1b9dfe","resolution":{"observed_at":"2026-08-08T12:54:38.185407Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"1210.3631","last_updated":"2012-10-12T20:28:48Z","snapshot_observed_at":"2026-08-15T00:43:19.006603Z","submitted_at":"2012-10-12T20:28:48Z","title":"Spitzer and Herschel multiwavelength characterization of the dust content of evolved HII regions","version":1},"cited_work":{"arxiv_id":"1210.3631","doi":null,"metadata_source":"pith","pith_arxiv_id":"1210.3631","snapshot_observed_at":"2026-08-08T12:54:39.558091Z","title":"Spitzer and Herschel multiwavelength characterization of the dust content of evolved HII regions","venue":"astro-ph.GA","work_id":"16448e5f-3486-4e57-84d7-5a26ea0ee5e5","year":2012},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":77,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:38.190512Z"},"links":{"cited_paper":"/paper/1210.3631","citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:da46e439b670b0dc86213040d3aa99f23069f1fbc647989a5bf7dd5046e52419","observation_id":"06e6895b-b2df-41eb-ae6f-01c34c97aa46","resolution":{"observed_at":"2026-08-08T12:54:39.562932Z","resolver_source":"local_arxiv","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-19T06:32:44.657259+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-19T06:32:44.657259+00:00","source":"crossref"},{"observed_at":"2026-08-19T06:32:39.956319+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-08T12:54:38.195190Z","title":", year = 1973, month = nov, volume =","venue":null,"work_id":null,"year":1973},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":78,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:38.195190Z"},"links":{"citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:784e01f673d47d48b9474f497309f096bcf82f2e6807a6a038f7b376aea8e3d3","observation_id":"f0dbe20f-3a18-4d8b-a162-db74d6dfc08c","resolution":{"observed_at":"2026-08-08T12:54:38.195190Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-08T12:54:38.199814Z","title":null,"venue":null,"work_id":null,"year":null},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":79,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:38.199814Z"},"links":{"citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:19f551e77520e88a2938ae9a55ebbeb28521a21a5cccbcc90fa849737368a6ba","observation_id":"12e9660a-dafc-4ad2-a881-d514e7c768c3","resolution":{"observed_at":"2026-08-08T12:54:38.199814Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"1909.07386","last_updated":"2019-09-16T18:00:00Z","snapshot_observed_at":"2026-08-07T13:02:49.940706Z","submitted_at":"2019-09-16T18:00:00Z","title":"Constraints on the production and escape of ionizing radiation from the emission-line spectra of metal-poor star-forming galaxies","version":1},"cited_work":{"arxiv_id":"1909.07386","doi":null,"metadata_source":"pith","pith_arxiv_id":"1909.07386","snapshot_observed_at":"2026-08-08T12:54:39.537333Z","title":"Constraints on the production and escape of ionizing radiation from the emission-line spectra of metal-poor star-forming galaxies","venue":"astro-ph.GA","work_id":"a926e34a-7a06-4f7d-ac25-69b41e0d9265","year":2019},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":80,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:38.204379Z"},"links":{"cited_paper":"/paper/1909.07386","citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:5f1f05b57f968ae2b8c4db219feec4c55fe0975a3f450899bef0cf6330bcb367","observation_id":"74fefac0-ebb2-4d0a-ab67-1b689433c3af","resolution":{"observed_at":"2026-08-08T12:54:39.542343Z","resolver_source":"local_arxiv","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-19T06:32:44.657259+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-19T06:32:44.657259+00:00","source":"crossref"},{"observed_at":"2026-08-19T06:32:39.956319+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"1001.2470","last_updated":"2010-01-14T14:29:04Z","snapshot_observed_at":"2026-08-15T05:29:05.323105Z","submitted_at":"2010-01-14T14:29:04Z","title":"H II regions: Witnesses to massive star formation","version":1},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"1001.2470","snapshot_observed_at":"2026-08-08T12:54:38.209269Z","title":", keywords =","venue":null,"work_id":null,"year":null},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":81,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:38.209269Z"},"links":{"cited_paper":"/paper/1001.2470","citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:e2089421770d2c8f6ac4c3cfdbf88f8c03594d180bcfc72a9c9df6a6363278cc","observation_id":"9e8ff22d-3171-428e-b550-a6f0731f9f27","resolution":{"observed_at":"2026-08-08T12:54:38.209269Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"1003.4998","last_updated":"2010-06-14T16:38:50Z","snapshot_observed_at":"2026-08-19T02:38:34.475866Z","submitted_at":"2010-03-25T20:37:35Z","title":"Understanding Spatial and Spectral Morphologies of Ultracompact H II Regions","version":2},"cited_work":{"arxiv_id":"1003.4998","doi":null,"metadata_source":"pith","pith_arxiv_id":"1003.4998","snapshot_observed_at":"2026-08-08T12:54:39.500846Z","title":"Understanding Spatial and Spectral Morphologies of Ultracompact H II Regions","venue":"astro-ph.GA","work_id":"2f952f12-6417-4f82-ba6a-294e974a87b9","year":2010},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":82,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:38.214099Z"},"links":{"cited_paper":"/paper/1003.4998","citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:26a0e8ea917b506f02e3b74b46ba4bdb019a246ffb73c792b92a14d31efa6330","observation_id":"c7e09dca-0fe0-4083-89bb-c75d9c17ec01","resolution":{"observed_at":"2026-08-08T12:54:39.506083Z","resolver_source":"local_arxiv","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-19T06:32:44.657259+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-19T06:32:44.657259+00:00","source":"crossref"},{"observed_at":"2026-08-19T06:32:39.956319+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"0906.0331","last_updated":"2009-06-01T18:34:38Z","snapshot_observed_at":"2026-08-17T01:32:16.441559Z","submitted_at":"2009-06-01T18:34:38Z","title":"The Perils of Clumpfind: The Mass Spectrum of Sub-structures in Molecular Clouds","version":1},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"0906.0331","snapshot_observed_at":"2026-08-08T12:54:38.218745Z","title":", keywords =","venue":null,"work_id":null,"year":null},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":83,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:38.218745Z"},"links":{"cited_paper":"/paper/0906.0331","citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:486f608c34e2f837846b166d5535d94b7d7207ecf03145e9fccd5b4f041a9039","observation_id":"a04eaf3e-2fbd-4da2-9fc6-d0237a1c7763","resolution":{"observed_at":"2026-08-08T12:54:38.218745Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"2212.09307","last_updated":"2023-02-20T15:08:55Z","snapshot_observed_at":"2026-08-16T16:07:45.622663Z","submitted_at":"2022-12-19T09:05:28Z","title":"ALMA-IMF VI -- Investigating the origin of stellar masses: Core mass function evolution in the W43-MM2&MM3 mini-starburst","version":2},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"2212.09307","snapshot_observed_at":"2026-08-08T12:54:38.223488Z","title":null,"venue":null,"work_id":null,"year":null},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":84,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:38.223488Z"},"links":{"cited_paper":"/paper/2212.09307","citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:8fbcbc64b1fa638e4663d40ce5f258695e9edb7dab55cabd082f0b2d7109f1dd","observation_id":"56b12d85-6542-4191-8207-172346e90166","resolution":{"observed_at":"2026-08-08T12:54:38.223488Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"1605.01200","last_updated":"2016-05-04T09:48:58Z","snapshot_observed_at":"2026-08-14T21:58:53.102445Z","submitted_at":"2016-05-04T09:48:58Z","title":"A search for ionized jets towards massive young stellar objects","version":1},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"1605.01200","snapshot_observed_at":"2026-08-08T12:54:38.228503Z","title":", keywords =","venue":null,"work_id":null,"year":null},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":85,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:38.228503Z"},"links":{"cited_paper":"/paper/1605.01200","citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:2425d52603d456cb7c99dc62461a2cdc56e9993e37ffbb3dbb1df3f649c57e45","observation_id":"1c269072-128c-4707-822b-59900163771c","resolution":{"observed_at":"2026-08-08T12:54:38.228503Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"2007.12276","last_updated":"2020-07-23T21:48:08Z","snapshot_observed_at":"2026-08-09T10:17:35.045855Z","submitted_at":"2020-07-23T21:48:08Z","title":"Recombination Lines and Molecular Gas from Hypercompact HII regions in W51 A","version":1},"cited_work":{"arxiv_id":"2007.12276","doi":null,"metadata_source":"pith","pith_arxiv_id":"2007.12276","snapshot_observed_at":"2026-08-08T12:54:39.432209Z","title":"Recombination Lines and Molecular Gas from Hypercompact HII regions in W51 A","venue":"astro-ph.GA","work_id":"b93222cf-1fd5-4cec-83e7-80197eb62088","year":2020},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":86,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:38.233344Z"},"links":{"cited_paper":"/paper/2007.12276","citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:e7f6f89aa48ea57c6a090b43ba4c38e59bc517f9ce356dd3ebff12a002b11136","observation_id":"deed5202-6b3a-4ed5-9b2e-35ee8d88dec1","resolution":{"observed_at":"2026-08-08T12:54:39.437614Z","resolver_source":"local_arxiv","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-19T06:32:44.657259+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-19T06:32:44.657259+00:00","source":"crossref"},{"observed_at":"2026-08-19T06:32:39.956319+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"0802.2944","last_updated":"2008-02-20T21:11:11Z","snapshot_observed_at":"2026-08-15T10:21:16.853620Z","submitted_at":"2008-02-20T21:11:11Z","title":"Structural Analysis of Molecular Clouds: Dendrograms","version":1},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"0802.2944","snapshot_observed_at":"2026-08-08T12:54:38.238155Z","title":", keywords =","venue":null,"work_id":null,"year":null},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":87,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:38.238155Z"},"links":{"cited_paper":"/paper/0802.2944","citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:f49f856ebe04f8ef4f0e5ad7167b8350a41ca19c0566505faf30ec15c43ccae1","observation_id":"cff60fa8-2a2b-422d-b82a-c9b4da1f49f6","resolution":{"observed_at":"2026-08-08T12:54:38.238155Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"2002.02894","last_updated":"2020-02-07T16:53:09Z","snapshot_observed_at":"2026-08-09T13:44:21.002929Z","submitted_at":"2020-02-07T16:53:09Z","title":"A Massive Young Runaway Star in W49 North","version":1},"cited_work":{"arxiv_id":"2002.02894","doi":null,"metadata_source":"pith","pith_arxiv_id":"2002.02894","snapshot_observed_at":"2026-08-08T12:54:39.395696Z","title":"A Massive Young Runaway Star in W49 North","venue":"astro-ph.SR","work_id":"71e88002-24e2-4725-bef0-3f0d55ebb293","year":2020},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":88,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:38.242948Z"},"links":{"cited_paper":"/paper/2002.02894","citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:8102d30f88b9f5a917e15fc69a69ccbe1aa95e7fe34f1b644e7ee4f4488b961d","observation_id":"e0675524-a51d-44fe-a200-1df97d8479e7","resolution":{"observed_at":"2026-08-08T12:54:39.400673Z","resolver_source":"local_arxiv","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-19T06:32:44.657259+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-19T06:32:44.657259+00:00","source":"crossref"},{"observed_at":"2026-08-19T06:32:39.956319+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"1812.00758","last_updated":"2019-07-02T09:59:52Z","snapshot_observed_at":"2026-08-14T17:49:30.415917Z","submitted_at":"2018-12-03T14:28:55Z","title":"Feedback in W49A diagnosed with radio recombination lines and models","version":2},"cited_work":{"arxiv_id":"1812.00758","doi":null,"metadata_source":"pith","pith_arxiv_id":"1812.00758","snapshot_observed_at":"2026-08-08T12:54:39.374512Z","title":"Feedback in W49A diagnosed with radio recombination lines and models","venue":"astro-ph.GA","work_id":"f13934a9-e821-40c7-ac37-fabed8475efd","year":2018},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":89,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:38.247820Z"},"links":{"cited_paper":"/paper/1812.00758","citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:b2c7a7a8fb627e88f0a87f99a3091578a6a922f417542bfa97a74229b0f4f2f5","observation_id":"1cd045c7-ea67-439d-9b7b-229f46c8717e","resolution":{"observed_at":"2026-08-08T12:54:39.379594Z","resolver_source":"local_arxiv","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-19T06:32:44.657259+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-19T06:32:44.657259+00:00","source":"crossref"},{"observed_at":"2026-08-19T06:32:39.956319+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"2206.07062","last_updated":"2022-06-14T18:00:01Z","snapshot_observed_at":"2026-08-16T16:53:01.089278Z","submitted_at":"2022-06-14T18:00:01Z","title":"SDSS-IV MaNGA: pyPipe3D analysis release for 10,000 galaxies","version":1},"cited_work":{"arxiv_id":"2206.07062","doi":null,"metadata_source":"pith","pith_arxiv_id":"2206.07062","snapshot_observed_at":"2026-08-08T12:54:39.352157Z","title":"SDSS-IV MaNGA: pyPipe3D analysis release for 10,000 galaxies","venue":"astro-ph.GA","work_id":"f2238828-8a40-40f5-9559-c37025ea1fb9","year":2022},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":90,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:38.252621Z"},"links":{"cited_paper":"/paper/2206.07062","citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:ec82f7284625e8cf0b24290d5e21b4cceb5897755357b407009d55d450a3cd12","observation_id":"f503bb8c-3509-405f-b73b-15406f5ba7b7","resolution":{"observed_at":"2026-08-08T12:54:39.357398Z","resolver_source":"local_arxiv","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-19T06:32:44.657259+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-19T06:32:44.657259+00:00","source":"crossref"},{"observed_at":"2026-08-19T06:32:39.956319+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"1909.07985","last_updated":"2019-09-17T18:00:02Z","snapshot_observed_at":"2026-08-11T08:20:06.451095Z","submitted_at":"2019-09-17T18:00:02Z","title":"The ALMA Survey of 70 $\\mu$m dark High-mass clumps in Early Stages (ASHES). I. Pilot Survey: Clump Fragmentation","version":1},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"1909.07985","snapshot_observed_at":"2026-08-08T12:54:38.257399Z","title":null,"venue":null,"work_id":null,"year":1909},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":91,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:38.257399Z"},"links":{"cited_paper":"/paper/1909.07985","citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:57814d335cbb87469c0fca8a7226ee5efc12df240c1a3044333e6576274ca5b0","observation_id":"4ab63e7a-6214-4a29-94b2-a3de009e75f6","resolution":{"observed_at":"2026-08-08T12:54:38.257399Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"1509.05749","last_updated":"2015-12-16T10:43:20Z","snapshot_observed_at":"2026-08-14T22:31:45.301992Z","submitted_at":"2015-09-18T19:03:48Z","title":"Young Stellar Objects in the Massive Star Forming Region W49","version":3},"cited_work":{"arxiv_id":"1509.05749","doi":null,"metadata_source":"pith","pith_arxiv_id":"1509.05749","snapshot_observed_at":"2026-08-08T12:54:39.315128Z","title":"Young Stellar Objects in the Massive Star Forming Region W49","venue":"astro-ph.SR","work_id":"b13c27cd-d6e0-4fb6-ad6e-1b989c498602","year":2015},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":92,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:38.262116Z"},"links":{"cited_paper":"/paper/1509.05749","citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:08494b79209193468ac85ed6bdcafd6ee1ea729bb03bae30364403c9e1d20c57","observation_id":"d444c5fd-92d1-47cd-a201-6d8b4b70639f","resolution":{"observed_at":"2026-08-08T12:54:39.320117Z","resolver_source":"local_arxiv","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-19T06:32:44.657259+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-19T06:32:44.657259+00:00","source":"crossref"},{"observed_at":"2026-08-19T06:32:39.956319+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-08T12:54:38.267115Z","title":"The Astrophysical Journal , year = 1955, month = jan, volume =","venue":null,"work_id":null,"year":1955},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":93,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:38.267115Z"},"links":{"citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:da5ecb48cb146076dffab110f7cfc64271f3eabafc36520f013e1e4e0bf2e8d5","observation_id":"c4534ebc-3a5e-4d36-846f-5447c4667bbb","resolution":{"observed_at":"2026-08-08T12:54:38.267115Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-08T12:54:38.271842Z","title":", keywords =","venue":null,"work_id":null,"year":null},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":94,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:38.271842Z"},"links":{"citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:fcf6b1972125812eb37d187966dab879c4cbae0574df8adeb906273c8a9e7415","observation_id":"7b92f046-9da6-4972-b3ec-ed74d040768b","resolution":{"observed_at":"2026-08-08T12:54:38.271842Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-08T12:54:38.276316Z","title":null,"venue":null,"work_id":null,"year":null},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":95,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:38.276316Z"},"links":{"citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:7c21d67856b73f0c5169abb1a9902c31e68f79373c7695747c5dd3dbdf9beb9a","observation_id":"aa0ca091-eb6d-4c4e-9932-cd0c27c5c7e1","resolution":{"observed_at":"2026-08-08T12:54:38.276316Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":"2107.14288","doi":null,"metadata_source":"arxiv_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-08T12:54:39.292140Z","title":", keywords =","venue":null,"work_id":"69ce094d-5b58-4dec-bfee-0f5115828f76","year":null},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":96,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:38.280789Z"},"links":{"citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:bec5fe0835d6dddebf59c5ae199a4138474008776878731557a15b71634d21d6","observation_id":"feb5f416-5850-42fc-9ec2-59286a9e701a","resolution":{"observed_at":"2026-08-08T12:54:39.299553Z","resolver_source":"arxiv_id","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-19T06:32:44.657259+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-19T06:32:44.657259+00:00","source":"crossref"},{"observed_at":"2026-08-19T06:32:39.956319+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"astro-ph/0410604","last_updated":"2004-10-25T17:57:00Z","snapshot_observed_at":"2026-08-10T14:09:01.969856Z","submitted_at":"2004-10-25T17:57:00Z","title":"Spherical Infall in G10.6-0.4: Accretion Through an Ultracompact HII Region","version":1},"cited_work":{"arxiv_id":"astro-ph/0410604","doi":null,"metadata_source":"pith","pith_arxiv_id":"astro-ph/0410604","snapshot_observed_at":"2026-08-08T12:54:39.126727Z","title":"Spherical Infall in G10.6-0.4: Accretion Through an Ultracompact HII Region","venue":"astro-ph","work_id":"4df9f093-e45c-4d7a-a119-759c64ff2561","year":2004},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":97,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:38.285195Z"},"links":{"cited_paper":"/paper/astro-ph/0410604","citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:5185ebf7b017e3773ff46705b05f800eb6697923b2e427d10637f4f3f3a6a51d","observation_id":"40203a38-3704-45ce-9c1d-59054b6891c3","resolution":{"observed_at":"2026-08-08T12:54:39.132459Z","resolver_source":"local_arxiv","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-19T06:32:44.657259+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-19T06:32:44.657259+00:00","source":"crossref"},{"observed_at":"2026-08-19T06:32:39.956319+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"1509.06754","last_updated":"2015-12-21T18:18:54Z","snapshot_observed_at":"2026-08-14T22:31:17.258547Z","submitted_at":"2015-09-22T20:19:18Z","title":"Outflow-Confined H II Regions. I. First Signposts of Massive Star Formation","version":2},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"1509.06754","snapshot_observed_at":"2026-08-08T12:54:38.289882Z","title":null,"venue":null,"work_id":null,"year":null},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":98,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:38.289882Z"},"links":{"cited_paper":"/paper/1509.06754","citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:736334edeb038fc2b4533f483849925996d012de876ad03aadcca2f75217e674","observation_id":"c10c9374-98f8-4c34-9078-facd37db0e1b","resolution":{"observed_at":"2026-08-08T12:54:38.289882Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-08T12:54:38.294745Z","title":", keywords =","venue":null,"work_id":null,"year":null},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":99,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:38.294745Z"},"links":{"citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:74167a6f99623c0e65322a639c82da027d9f070ed9ac5b3b733a54b79c926eb1","observation_id":"8ac73337-db67-4c84-9c0c-a900591d8a08","resolution":{"observed_at":"2026-08-08T12:54:38.294745Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-08T12:54:38.299220Z","title":", keywords =","venue":null,"work_id":null,"year":null},"citing_paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations","version":1},"reference_index":100,"source":"arxiv_source","source_observed_at":"2026-08-08T12:54:38.299220Z"},"links":{"citing_paper":"/paper/2608.05453"},"observation_digest":"sha256:77e8934d3ee33e4334c68ca15466fd8a5d46bc01403883073cf1e0939bddfed3","observation_id":"bed0e06f-394c-4728-9a4d-3f1ce5dadc50","resolution":{"observed_at":"2026-08-08T12:54:38.299220Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}}],"paper":{"arxiv_id":"2608.05453","last_updated":"2026-08-05T22:56:49Z","latest_version":1,"primary_category":"astro-ph.GA","snapshot_observed_at":"2026-08-15T05:54:16.604646Z","submitted_at":"2026-08-05T22:56:49Z","title":"The Zero-Age Massive Stellar Population of W49A from VLA Observations"},"reference_resolution":{"displayed":100,"state_counts":{"malformed_identifier":0,"metadata_mismatch":0,"parse_uncertain":0,"unresolved":65,"verified_exact":35,"verified_fuzzy":0},"total_outbound_references":110},"refusal":"A citation records a reference. It does not transfer a finding from one paper to another.","schema":"pith.paper-citation-record.v1","standing_sources":[{"observed_at":"2026-08-19T06:32:44.657259+00:00","source":"crossref"},{"observed_at":"2026-08-19T06:32:39.956319+00:00","source":"retraction_watch"}],"thesis":"As of 19 August 2026, this Paper Citation Record lists 100 of 110 outbound references and 0 inbound Pith citation observations for arXiv:2608.05453."}