{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2013:XSAXSWKP7J5FGCFGGOROWSAJ7U","short_pith_number":"pith:XSAXSWKP","schema_version":"1.0","canonical_sha256":"bc8179594ffa7a5308a633a2eb4809fd36bbe9b30e9f04c4a74231264fa49bf1","source":{"kind":"arxiv","id":"1307.1474","version":1},"attestation_state":"computed","paper":{"title":"Distinct Chemical Regions in the \"Prestellar\" Infrared Dark Cloud (IRDC) G028.23-00.19","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.GA","authors_text":"Izaskun Jimenez-Serra, James M. Jackson, Jonathan B. Foster, Patricio Sanhueza, Thushara Pillai, William J. Dirienzo","submitted_at":"2013-07-04T20:00:08Z","abstract_excerpt":"We have observed the IRDC G028.23-00.19 at 3.3 mm using CARMA. In its center, the IRDC hosts one of the most massive (~1520 Msun) quiescent, cold (12 K) clumps known (MM1). The low temperature, high NH_2D abundance, narrow molecular line widths, and absence of embedded IR sources (from 3.6 to 70 mu) indicate that the clump is likely prestellar. Strong SiO emission with broad line widths (6-9 km s^-1) and high abundances (0.8-4 x 10^-9) is detected in the northern and southern regions of the IRDC, unassociated with MM1. We suggest that SiO is released to the gas phase from the dust grains throu"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1307.1474","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2013-07-04T20:00:08Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"b61e0310c03839105f196323b5ffb76327baf3c17b4d6f980bd693e01d8c0700","abstract_canon_sha256":"aef57374e222ea86cdb2e7b1be4211d75ae78db5491e6eae12e5cbf108ee471e"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:48:59.576758Z","signature_b64":"mE/7tIyxnvH44ld3pzbghRUCJpFUUYztCkP5klDxK2oIXL4gJnAW+MGp22TQQ+LZszh1ImlIoujOcBT/vdeUCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"bc8179594ffa7a5308a633a2eb4809fd36bbe9b30e9f04c4a74231264fa49bf1","last_reissued_at":"2026-05-18T01:48:59.576279Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:48:59.576279Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Distinct Chemical Regions in the \"Prestellar\" Infrared Dark Cloud (IRDC) G028.23-00.19","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.GA","authors_text":"Izaskun Jimenez-Serra, James M. Jackson, Jonathan B. Foster, Patricio Sanhueza, Thushara Pillai, William J. Dirienzo","submitted_at":"2013-07-04T20:00:08Z","abstract_excerpt":"We have observed the IRDC G028.23-00.19 at 3.3 mm using CARMA. In its center, the IRDC hosts one of the most massive (~1520 Msun) quiescent, cold (12 K) clumps known (MM1). The low temperature, high NH_2D abundance, narrow molecular line widths, and absence of embedded IR sources (from 3.6 to 70 mu) indicate that the clump is likely prestellar. Strong SiO emission with broad line widths (6-9 km s^-1) and high abundances (0.8-4 x 10^-9) is detected in the northern and southern regions of the IRDC, unassociated with MM1. We suggest that SiO is released to the gas phase from the dust grains throu"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1307.1474","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"1307.1474","created_at":"2026-05-18T01:48:59.576369+00:00"},{"alias_kind":"arxiv_version","alias_value":"1307.1474v1","created_at":"2026-05-18T01:48:59.576369+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1307.1474","created_at":"2026-05-18T01:48:59.576369+00:00"},{"alias_kind":"pith_short_12","alias_value":"XSAXSWKP7J5F","created_at":"2026-05-18T12:28:06.772260+00:00"},{"alias_kind":"pith_short_16","alias_value":"XSAXSWKP7J5FGCFG","created_at":"2026-05-18T12:28:06.772260+00:00"},{"alias_kind":"pith_short_8","alias_value":"XSAXSWKP","created_at":"2026-05-18T12:28:06.772260+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/XSAXSWKP7J5FGCFGGOROWSAJ7U","json":"https://pith.science/pith/XSAXSWKP7J5FGCFGGOROWSAJ7U.json","graph_json":"https://pith.science/api/pith-number/XSAXSWKP7J5FGCFGGOROWSAJ7U/graph.json","events_json":"https://pith.science/api/pith-number/XSAXSWKP7J5FGCFGGOROWSAJ7U/events.json","paper":"https://pith.science/paper/XSAXSWKP"},"agent_actions":{"view_html":"https://pith.science/pith/XSAXSWKP7J5FGCFGGOROWSAJ7U","download_json":"https://pith.science/pith/XSAXSWKP7J5FGCFGGOROWSAJ7U.json","view_paper":"https://pith.science/paper/XSAXSWKP","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1307.1474&json=true","fetch_graph":"https://pith.science/api/pith-number/XSAXSWKP7J5FGCFGGOROWSAJ7U/graph.json","fetch_events":"https://pith.science/api/pith-number/XSAXSWKP7J5FGCFGGOROWSAJ7U/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/XSAXSWKP7J5FGCFGGOROWSAJ7U/action/timestamp_anchor","attest_storage":"https://pith.science/pith/XSAXSWKP7J5FGCFGGOROWSAJ7U/action/storage_attestation","attest_author":"https://pith.science/pith/XSAXSWKP7J5FGCFGGOROWSAJ7U/action/author_attestation","sign_citation":"https://pith.science/pith/XSAXSWKP7J5FGCFGGOROWSAJ7U/action/citation_signature","submit_replication":"https://pith.science/pith/XSAXSWKP7J5FGCFGGOROWSAJ7U/action/replication_record"}},"created_at":"2026-05-18T01:48:59.576369+00:00","updated_at":"2026-05-18T01:48:59.576369+00:00"}