{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2008:KLH2WWOAOMYRY4ZWGSQRXCKIYK","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":"d41b2b1f9f7ce157a0dce696be558b3b0c88396d36419eb323cbb03def04fdee","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-12-09T20:41:02Z","title_canon_sha256":"7a774f79ba5a6cdb500eb2d08aff1acac08aa75bda7852b47b6cf106178a8532"},"schema_version":"1.0","source":{"id":"0812.1789","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0812.1789","created_at":"2026-05-18T02:15:11Z"},{"alias_kind":"arxiv_version","alias_value":"0812.1789v3","created_at":"2026-05-18T02:15:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0812.1789","created_at":"2026-05-18T02:15:11Z"},{"alias_kind":"pith_short_12","alias_value":"KLH2WWOAOMYR","created_at":"2026-05-18T12:25:57Z"},{"alias_kind":"pith_short_16","alias_value":"KLH2WWOAOMYRY4ZW","created_at":"2026-05-18T12:25:57Z"},{"alias_kind":"pith_short_8","alias_value":"KLH2WWOA","created_at":"2026-05-18T12:25:57Z"}],"graph_snapshots":[{"event_id":"sha256:1f8abe3163db3ae3fc233877cf88ced3d3dc63bb427488f1ff76ace598fd29f3","target":"graph","created_at":"2026-05-18T02:15:11Z","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"},"paper":{"abstract_excerpt":"We report Mopra (ATNF), Anglo-Australian Telescope, and Atacama Submillimeter Telescope Experiment observations of a molecular clump in Carina, BYF73 = G286.21+0.17, which give evidence of large-scale gravitational infall in the dense gas. From the millimetre and far-infrared data, the clump has mass ~ 2 x 10^4 Msun, luminosity ~ 2-3 x 10^4 Lsun, and diameter ~ 0.9 pc. From radiative transfer modelling, we derive a mass infall rate ~ 3.4 x 10^-2 Msun yr-1. If confirmed, this rate for gravitational infall in a molecular core or clump may be the highest yet seen. The near-infrared K-band imaging","authors_text":"Andrew M. Hopkins, Naoko Furukawa, Peter J. Barnes, Stuart D. Ryder, Yasuo Fukui, Yoshinori Yonekura, Yosuke Miyamoto","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-12-09T20:41:02Z","title":"Discovery of Large-Scale Gravitational Infall in a Massive Protostellar Cluster"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0812.1789","kind":"arxiv","version":3},"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:ccd3bd2163a6ae74809dc53e879108817a2698a0830b07ecc8455f703b977746","target":"record","created_at":"2026-05-18T02:15:11Z","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":"d41b2b1f9f7ce157a0dce696be558b3b0c88396d36419eb323cbb03def04fdee","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-12-09T20:41:02Z","title_canon_sha256":"7a774f79ba5a6cdb500eb2d08aff1acac08aa75bda7852b47b6cf106178a8532"},"schema_version":"1.0","source":{"id":"0812.1789","kind":"arxiv","version":3}},"canonical_sha256":"52cfab59c073311c733634a11b8948c296a9704b54038780755cceb91cf24fdc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"52cfab59c073311c733634a11b8948c296a9704b54038780755cceb91cf24fdc","first_computed_at":"2026-05-18T02:15:11.139932Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:15:11.139932Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"sDVqDborWpN+xaopJHXnDydHPa1RSNyF+lf0PSpnm3rxryTxR1+4ncEftXejA6ZGTS22Ce4Oen0Epekc6bkKBw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:15:11.140570Z","signed_message":"canonical_sha256_bytes"},"source_id":"0812.1789","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ccd3bd2163a6ae74809dc53e879108817a2698a0830b07ecc8455f703b977746","sha256:1f8abe3163db3ae3fc233877cf88ced3d3dc63bb427488f1ff76ace598fd29f3"],"state_sha256":"a02d48b6b4570f8e7e417a760d5ee6ff9f4237dc5cf3f093cb62d754d3696cba"}