{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:IGBQTGPGAU7U44BOG3A7JRTUKO","short_pith_number":"pith:IGBQTGPG","canonical_record":{"source":{"id":"2011.05939","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-11-11T17:57:23Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"c2d745cff9ec5d3f867aa4fc0aefb098b233676631c70195a65841f0fcaba869","abstract_canon_sha256":"1011831b02705a46f33b083a61008c65bfa1b78dc33b08f6cf986af8dec30c0b"},"schema_version":"1.0"},"canonical_sha256":"41830999e6053f4e702e36c1f4c67453a70e61c10560e986d2dff831e180d15e","source":{"kind":"arxiv","id":"2011.05939","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2011.05939","created_at":"2026-07-05T02:08:13Z"},{"alias_kind":"arxiv_version","alias_value":"2011.05939v1","created_at":"2026-07-05T02:08:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2011.05939","created_at":"2026-07-05T02:08:13Z"},{"alias_kind":"pith_short_12","alias_value":"IGBQTGPGAU7U","created_at":"2026-07-05T02:08:13Z"},{"alias_kind":"pith_short_16","alias_value":"IGBQTGPGAU7U44BO","created_at":"2026-07-05T02:08:13Z"},{"alias_kind":"pith_short_8","alias_value":"IGBQTGPG","created_at":"2026-07-05T02:08:13Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:IGBQTGPGAU7U44BOG3A7JRTUKO","target":"record","payload":{"canonical_record":{"source":{"id":"2011.05939","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-11-11T17:57:23Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"c2d745cff9ec5d3f867aa4fc0aefb098b233676631c70195a65841f0fcaba869","abstract_canon_sha256":"1011831b02705a46f33b083a61008c65bfa1b78dc33b08f6cf986af8dec30c0b"},"schema_version":"1.0"},"canonical_sha256":"41830999e6053f4e702e36c1f4c67453a70e61c10560e986d2dff831e180d15e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:08:13.735142Z","signature_b64":"lDavI5w8al4Y8pPrcwu475sWyyNT3EGP9pi4WbdAf4k+glbxD3IrYCC3zA6wyYOu8ZAQokvnSLSpj1CdLwvaDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"41830999e6053f4e702e36c1f4c67453a70e61c10560e986d2dff831e180d15e","last_reissued_at":"2026-07-05T02:08:13.734692Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:08:13.734692Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2011.05939","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T02:08:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GbF178G8TpAaIMHP6mSKp0MLqBhiOccCcMk4+oVnPIPedC6LHOrEFWMp/KS4yNtz1fDbhL7ElgNTsjQS3O3tCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-05T08:07:01.367122Z"},"content_sha256":"048a78d4abb6b85baf54e28704c691729a356e1f18cc2babb5218cae72ba1bd6","schema_version":"1.0","event_id":"sha256:048a78d4abb6b85baf54e28704c691729a356e1f18cc2babb5218cae72ba1bd6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:IGBQTGPGAU7U44BOG3A7JRTUKO","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Mass segregation and sequential star formation in NGC 2264 revealed by Herschel","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.GA","authors_text":"A. Men'shchikov, A. S. M. Buckner, B. Thomasson, E. Fiorellino, E. Moraux, F. Louvet, F. Motte, I. Joncour, J.-F. Robitaille, M. Gonzalez, N. Cunningham, N. Schneider, P. Andr\\'e, P. Didelon, R. Oudmaijer, S. Bontemps, S. L. Lumsden, T. Nony, Y. Pouteau","submitted_at":"2020-11-11T17:57:23Z","abstract_excerpt":"The mass segregation of stellar clusters could be primordial rather than dynamical. Despite the abundance of studies of mass segregation for stellar clusters, those for stellar progenitors are still scarce, so the question on the origin and evolution of mass segregation is still open. Our goal is to characterize the structure of the NGC 2264 molecular cloud and compare the populations of clumps and young stellar objects (YSOs) in this region whose rich YSO population has shown evidence of sequential star formation. We separated the Herschel column density map of NGC 2264 in three subregions an"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2011.05939","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2011.05939/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T02:08:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ECjk6JCo7BlbwwX+Gfx3yS9e42fwZxnrnqVcHjOknv/sA9bZh2NiL4iAgtwHf0+IdS0x8BmD5qAZ7PEaVbSTBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-05T08:07:01.367502Z"},"content_sha256":"7a29beca4304e4d5cf7c4ffaa21cd0747b054bf29ddaf0c7f0efd97c61184339","schema_version":"1.0","event_id":"sha256:7a29beca4304e4d5cf7c4ffaa21cd0747b054bf29ddaf0c7f0efd97c61184339"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/IGBQTGPGAU7U44BOG3A7JRTUKO/bundle.json","state_url":"https://pith.science/pith/IGBQTGPGAU7U44BOG3A7JRTUKO/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/IGBQTGPGAU7U44BOG3A7JRTUKO/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-07-05T08:07:01Z","links":{"resolver":"https://pith.science/pith/IGBQTGPGAU7U44BOG3A7JRTUKO","bundle":"https://pith.science/pith/IGBQTGPGAU7U44BOG3A7JRTUKO/bundle.json","state":"https://pith.science/pith/IGBQTGPGAU7U44BOG3A7JRTUKO/state.json","well_known_bundle":"https://pith.science/.well-known/pith/IGBQTGPGAU7U44BOG3A7JRTUKO/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:IGBQTGPGAU7U44BOG3A7JRTUKO","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"1011831b02705a46f33b083a61008c65bfa1b78dc33b08f6cf986af8dec30c0b","cross_cats_sorted":["astro-ph.SR"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-11-11T17:57:23Z","title_canon_sha256":"c2d745cff9ec5d3f867aa4fc0aefb098b233676631c70195a65841f0fcaba869"},"schema_version":"1.0","source":{"id":"2011.05939","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2011.05939","created_at":"2026-07-05T02:08:13Z"},{"alias_kind":"arxiv_version","alias_value":"2011.05939v1","created_at":"2026-07-05T02:08:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2011.05939","created_at":"2026-07-05T02:08:13Z"},{"alias_kind":"pith_short_12","alias_value":"IGBQTGPGAU7U","created_at":"2026-07-05T02:08:13Z"},{"alias_kind":"pith_short_16","alias_value":"IGBQTGPGAU7U44BO","created_at":"2026-07-05T02:08:13Z"},{"alias_kind":"pith_short_8","alias_value":"IGBQTGPG","created_at":"2026-07-05T02:08:13Z"}],"graph_snapshots":[{"event_id":"sha256:7a29beca4304e4d5cf7c4ffaa21cd0747b054bf29ddaf0c7f0efd97c61184339","target":"graph","created_at":"2026-07-05T02:08:13Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2011.05939/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The mass segregation of stellar clusters could be primordial rather than dynamical. Despite the abundance of studies of mass segregation for stellar clusters, those for stellar progenitors are still scarce, so the question on the origin and evolution of mass segregation is still open. Our goal is to characterize the structure of the NGC 2264 molecular cloud and compare the populations of clumps and young stellar objects (YSOs) in this region whose rich YSO population has shown evidence of sequential star formation. We separated the Herschel column density map of NGC 2264 in three subregions an","authors_text":"A. Men'shchikov, A. S. M. Buckner, B. Thomasson, E. Fiorellino, E. Moraux, F. Louvet, F. Motte, I. Joncour, J.-F. Robitaille, M. Gonzalez, N. Cunningham, N. Schneider, P. Andr\\'e, P. Didelon, R. Oudmaijer, S. Bontemps, S. L. Lumsden, T. Nony, Y. Pouteau","cross_cats":["astro-ph.SR"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-11-11T17:57:23Z","title":"Mass segregation and sequential star formation in NGC 2264 revealed by Herschel"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2011.05939","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:048a78d4abb6b85baf54e28704c691729a356e1f18cc2babb5218cae72ba1bd6","target":"record","created_at":"2026-07-05T02:08:13Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"1011831b02705a46f33b083a61008c65bfa1b78dc33b08f6cf986af8dec30c0b","cross_cats_sorted":["astro-ph.SR"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-11-11T17:57:23Z","title_canon_sha256":"c2d745cff9ec5d3f867aa4fc0aefb098b233676631c70195a65841f0fcaba869"},"schema_version":"1.0","source":{"id":"2011.05939","kind":"arxiv","version":1}},"canonical_sha256":"41830999e6053f4e702e36c1f4c67453a70e61c10560e986d2dff831e180d15e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"41830999e6053f4e702e36c1f4c67453a70e61c10560e986d2dff831e180d15e","first_computed_at":"2026-07-05T02:08:13.734692Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:08:13.734692Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"lDavI5w8al4Y8pPrcwu475sWyyNT3EGP9pi4WbdAf4k+glbxD3IrYCC3zA6wyYOu8ZAQokvnSLSpj1CdLwvaDg==","signature_status":"signed_v1","signed_at":"2026-07-05T02:08:13.735142Z","signed_message":"canonical_sha256_bytes"},"source_id":"2011.05939","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:048a78d4abb6b85baf54e28704c691729a356e1f18cc2babb5218cae72ba1bd6","sha256:7a29beca4304e4d5cf7c4ffaa21cd0747b054bf29ddaf0c7f0efd97c61184339"],"state_sha256":"5c2f66b1c70f8c8d425599024decff6c23f01720c5191b9677a3ce672baf9fea"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"es8alpuH7eHTJ5m/lGE79QMD/liuWmv9vbaadX48LyugMxOJLJAlhZsCqTLo3eFMccwBJO+tf2+2jp5C9KiIAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-05T08:07:01.369438Z","bundle_sha256":"1d31fcd4c173f5605f223c670f0c3493360b48d2bd72076b12259ed90bb401cd"}}