{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2014:UIJ7QLFRDRLLLX2LJTKLA2BNHR","short_pith_number":"pith:UIJ7QLFR","schema_version":"1.0","canonical_sha256":"a213f82cb11c56b5df4b4cd4b0682d3c4cebda235ced1751f1263ea9f24bca55","source":{"kind":"arxiv","id":"1401.3287","version":1},"attestation_state":"computed","paper":{"title":"Star Formation Relations in Nearby Molecular Clouds","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Amanda Heiderman, Nalin Vutisalchavakul, Neal J. Evans II","submitted_at":"2014-01-14T19:09:58Z","abstract_excerpt":"We test some ideas for star formation relations against data on local molecular clouds. On a cloud by cloud basis, the relation between the surface density of star formation rate and surface density of gas divided by a free-fall time, calculated from the mean cloud density, shows no significant correlation. If a crossing time is substituted for the free-fall time, there is even less correlation. Within a cloud, the star formation rate volume and surface densities increase rapidly with the corresponding gas densities, faster than predicted by models using the free-fall time defined from the loc"},"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":"1401.3287","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-01-14T19:09:58Z","cross_cats_sorted":[],"title_canon_sha256":"9f8c71ac6a795afa01ff7df852b73e0655462ccd77b1fe29c8ece8691b52070a","abstract_canon_sha256":"f04a232397cb71b0a8bf1ca8c477638bfd4f218cc30ca1cf8fa8d02f6f2c14db"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:45:25.613066Z","signature_b64":"l9XPYDmL4+9HddgPpNMlVtNYaA31FoDocNecnggw/9oOANIARRYxLNHIWmpoaMv0mF79hGJVrrReCWwcOmmWCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a213f82cb11c56b5df4b4cd4b0682d3c4cebda235ced1751f1263ea9f24bca55","last_reissued_at":"2026-05-18T01:45:25.612570Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:45:25.612570Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Star Formation Relations in Nearby Molecular Clouds","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Amanda Heiderman, Nalin Vutisalchavakul, Neal J. Evans II","submitted_at":"2014-01-14T19:09:58Z","abstract_excerpt":"We test some ideas for star formation relations against data on local molecular clouds. On a cloud by cloud basis, the relation between the surface density of star formation rate and surface density of gas divided by a free-fall time, calculated from the mean cloud density, shows no significant correlation. If a crossing time is substituted for the free-fall time, there is even less correlation. Within a cloud, the star formation rate volume and surface densities increase rapidly with the corresponding gas densities, faster than predicted by models using the free-fall time defined from the loc"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1401.3287","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":"1401.3287","created_at":"2026-05-18T01:45:25.612646+00:00"},{"alias_kind":"arxiv_version","alias_value":"1401.3287v1","created_at":"2026-05-18T01:45:25.612646+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1401.3287","created_at":"2026-05-18T01:45:25.612646+00:00"},{"alias_kind":"pith_short_12","alias_value":"UIJ7QLFRDRLL","created_at":"2026-05-18T12:28:52.271510+00:00"},{"alias_kind":"pith_short_16","alias_value":"UIJ7QLFRDRLLLX2L","created_at":"2026-05-18T12:28:52.271510+00:00"},{"alias_kind":"pith_short_8","alias_value":"UIJ7QLFR","created_at":"2026-05-18T12:28:52.271510+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/UIJ7QLFRDRLLLX2LJTKLA2BNHR","json":"https://pith.science/pith/UIJ7QLFRDRLLLX2LJTKLA2BNHR.json","graph_json":"https://pith.science/api/pith-number/UIJ7QLFRDRLLLX2LJTKLA2BNHR/graph.json","events_json":"https://pith.science/api/pith-number/UIJ7QLFRDRLLLX2LJTKLA2BNHR/events.json","paper":"https://pith.science/paper/UIJ7QLFR"},"agent_actions":{"view_html":"https://pith.science/pith/UIJ7QLFRDRLLLX2LJTKLA2BNHR","download_json":"https://pith.science/pith/UIJ7QLFRDRLLLX2LJTKLA2BNHR.json","view_paper":"https://pith.science/paper/UIJ7QLFR","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1401.3287&json=true","fetch_graph":"https://pith.science/api/pith-number/UIJ7QLFRDRLLLX2LJTKLA2BNHR/graph.json","fetch_events":"https://pith.science/api/pith-number/UIJ7QLFRDRLLLX2LJTKLA2BNHR/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/UIJ7QLFRDRLLLX2LJTKLA2BNHR/action/timestamp_anchor","attest_storage":"https://pith.science/pith/UIJ7QLFRDRLLLX2LJTKLA2BNHR/action/storage_attestation","attest_author":"https://pith.science/pith/UIJ7QLFRDRLLLX2LJTKLA2BNHR/action/author_attestation","sign_citation":"https://pith.science/pith/UIJ7QLFRDRLLLX2LJTKLA2BNHR/action/citation_signature","submit_replication":"https://pith.science/pith/UIJ7QLFRDRLLLX2LJTKLA2BNHR/action/replication_record"}},"created_at":"2026-05-18T01:45:25.612646+00:00","updated_at":"2026-05-18T01:45:25.612646+00:00"}