{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2009:5AEZBQRJUW66FCXXLT5MJOC5OY","short_pith_number":"pith:5AEZBQRJ","schema_version":"1.0","canonical_sha256":"e80990c229a5bde28af75cfac4b85d7604f61e31bcb2bb61ad946567414114c9","source":{"kind":"arxiv","id":"0908.4129","version":1},"attestation_state":"computed","paper":{"title":"Outflow Feedback Regulated Massive Star Formation in Parsec-Scale Cluster Forming Clumps","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Fumitaka Nakamura (Niigata University), Peng Wang (Standford), Tom Abel (Stanford), Zhi-Yun Li (University of Virginia)","submitted_at":"2009-08-28T04:31:33Z","abstract_excerpt":"(Abridged) We investigate massive star formation in turbulent, magnetized, parsec-scale clumps of molecular clouds including protostellar outflow feedback using Enzo-based MHD simulations with accreting sink particles and effective resolution $2048^3$. We find that, in the absence of regulation by magnetic fields and outflow feedback, massive stars form readily in a turbulent, moderately condensed clump of $\\sim 1,600$ solar masses, along with a cluster of hundreds of lower mass stars. The massive stars are fed at high rates by (1) transient dense filaments produced by large-scale turbulent co"},"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":"0908.4129","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2009-08-28T04:31:33Z","cross_cats_sorted":[],"title_canon_sha256":"d5255e494ee38d74066e8101d66318f5c820e4d9cdc7c9c9e68c2619bcc7ffb2","abstract_canon_sha256":"1960df2cae930c6558e1b823c6205ea7b49bded42f20b7bb1423005735663197"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:34:37.276627Z","signature_b64":"cBLiC8IQFKdKzAOid8gg2YaLciGmf4WK6FXLol34+ijy/wSoMPIB40eIEHMp0x5gTZzgron3DC7K7w/u9lBFDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e80990c229a5bde28af75cfac4b85d7604f61e31bcb2bb61ad946567414114c9","last_reissued_at":"2026-05-18T02:34:37.276019Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:34:37.276019Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Outflow Feedback Regulated Massive Star Formation in Parsec-Scale Cluster Forming Clumps","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Fumitaka Nakamura (Niigata University), Peng Wang (Standford), Tom Abel (Stanford), Zhi-Yun Li (University of Virginia)","submitted_at":"2009-08-28T04:31:33Z","abstract_excerpt":"(Abridged) We investigate massive star formation in turbulent, magnetized, parsec-scale clumps of molecular clouds including protostellar outflow feedback using Enzo-based MHD simulations with accreting sink particles and effective resolution $2048^3$. We find that, in the absence of regulation by magnetic fields and outflow feedback, massive stars form readily in a turbulent, moderately condensed clump of $\\sim 1,600$ solar masses, along with a cluster of hundreds of lower mass stars. The massive stars are fed at high rates by (1) transient dense filaments produced by large-scale turbulent co"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0908.4129","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":"0908.4129","created_at":"2026-05-18T02:34:37.276132+00:00"},{"alias_kind":"arxiv_version","alias_value":"0908.4129v1","created_at":"2026-05-18T02:34:37.276132+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0908.4129","created_at":"2026-05-18T02:34:37.276132+00:00"},{"alias_kind":"pith_short_12","alias_value":"5AEZBQRJUW66","created_at":"2026-05-18T12:25:58.837520+00:00"},{"alias_kind":"pith_short_16","alias_value":"5AEZBQRJUW66FCXX","created_at":"2026-05-18T12:25:58.837520+00:00"},{"alias_kind":"pith_short_8","alias_value":"5AEZBQRJ","created_at":"2026-05-18T12:25:58.837520+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/5AEZBQRJUW66FCXXLT5MJOC5OY","json":"https://pith.science/pith/5AEZBQRJUW66FCXXLT5MJOC5OY.json","graph_json":"https://pith.science/api/pith-number/5AEZBQRJUW66FCXXLT5MJOC5OY/graph.json","events_json":"https://pith.science/api/pith-number/5AEZBQRJUW66FCXXLT5MJOC5OY/events.json","paper":"https://pith.science/paper/5AEZBQRJ"},"agent_actions":{"view_html":"https://pith.science/pith/5AEZBQRJUW66FCXXLT5MJOC5OY","download_json":"https://pith.science/pith/5AEZBQRJUW66FCXXLT5MJOC5OY.json","view_paper":"https://pith.science/paper/5AEZBQRJ","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=0908.4129&json=true","fetch_graph":"https://pith.science/api/pith-number/5AEZBQRJUW66FCXXLT5MJOC5OY/graph.json","fetch_events":"https://pith.science/api/pith-number/5AEZBQRJUW66FCXXLT5MJOC5OY/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/5AEZBQRJUW66FCXXLT5MJOC5OY/action/timestamp_anchor","attest_storage":"https://pith.science/pith/5AEZBQRJUW66FCXXLT5MJOC5OY/action/storage_attestation","attest_author":"https://pith.science/pith/5AEZBQRJUW66FCXXLT5MJOC5OY/action/author_attestation","sign_citation":"https://pith.science/pith/5AEZBQRJUW66FCXXLT5MJOC5OY/action/citation_signature","submit_replication":"https://pith.science/pith/5AEZBQRJUW66FCXXLT5MJOC5OY/action/replication_record"}},"created_at":"2026-05-18T02:34:37.276132+00:00","updated_at":"2026-05-18T02:34:37.276132+00:00"}