{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2012:4ZIUNVPWZIAKPUK5QA4LJTHJCT","short_pith_number":"pith:4ZIUNVPW","schema_version":"1.0","canonical_sha256":"e65146d5f6ca00a7d15d8038b4cce914f723369cf8a736fcfeb1dea986bbe0b1","source":{"kind":"arxiv","id":"1204.0390","version":1},"attestation_state":"computed","paper":{"title":"Extended warm and dense gas towards W49A: starburst conditions in our Galaxy?","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"F. F. S. van der Tak, G. A. Fuller, M. Spaans, R. Plume, Z. Nagy","submitted_at":"2012-04-02T12:49:45Z","abstract_excerpt":"The star formation rates in starburst galaxies are orders of magnitude higher than in local star-forming regions, and the origin of this difference is not well understood. We use sub-mm spectral line maps to characterize the physical conditions of the molecular gas in the luminous Galactic star-forming region W49A and compare them with the conditions in starburst galaxies. We probe the temperature and density structure of W49A using H_2CO and HCN line ratios over a 2'x2' (6.6x6.6 pc) field with an angular resolution of 15\" (~0.8 pc) provided by the JCMT Spectral Legacy Survey. We analyze the r"},"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":"1204.0390","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-04-02T12:49:45Z","cross_cats_sorted":[],"title_canon_sha256":"a30de3652a6111d689afe94e0bf54d97f646efd854ec7990f4aa4368758aa7fa","abstract_canon_sha256":"17df284c17e8e1b0a0f9e405ca2dede7c5c25f44ef776e6bb3877395326f31e4"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:57:58.154442Z","signature_b64":"BxUzpxO6uIcvpVbQyFowJRJixq/+dh5z6SCphPgRLXz71ZUfv8jga0yNnVG1HyObRZwZxjo4cTt5yJR7WcYLBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e65146d5f6ca00a7d15d8038b4cce914f723369cf8a736fcfeb1dea986bbe0b1","last_reissued_at":"2026-05-18T01:57:58.153769Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:57:58.153769Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Extended warm and dense gas towards W49A: starburst conditions in our Galaxy?","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"F. F. S. van der Tak, G. A. Fuller, M. Spaans, R. Plume, Z. Nagy","submitted_at":"2012-04-02T12:49:45Z","abstract_excerpt":"The star formation rates in starburst galaxies are orders of magnitude higher than in local star-forming regions, and the origin of this difference is not well understood. We use sub-mm spectral line maps to characterize the physical conditions of the molecular gas in the luminous Galactic star-forming region W49A and compare them with the conditions in starburst galaxies. We probe the temperature and density structure of W49A using H_2CO and HCN line ratios over a 2'x2' (6.6x6.6 pc) field with an angular resolution of 15\" (~0.8 pc) provided by the JCMT Spectral Legacy Survey. We analyze the r"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1204.0390","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":"1204.0390","created_at":"2026-05-18T01:57:58.153897+00:00"},{"alias_kind":"arxiv_version","alias_value":"1204.0390v1","created_at":"2026-05-18T01:57:58.153897+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1204.0390","created_at":"2026-05-18T01:57:58.153897+00:00"},{"alias_kind":"pith_short_12","alias_value":"4ZIUNVPWZIAK","created_at":"2026-05-18T12:26:53.410803+00:00"},{"alias_kind":"pith_short_16","alias_value":"4ZIUNVPWZIAKPUK5","created_at":"2026-05-18T12:26:53.410803+00:00"},{"alias_kind":"pith_short_8","alias_value":"4ZIUNVPW","created_at":"2026-05-18T12:26:53.410803+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/4ZIUNVPWZIAKPUK5QA4LJTHJCT","json":"https://pith.science/pith/4ZIUNVPWZIAKPUK5QA4LJTHJCT.json","graph_json":"https://pith.science/api/pith-number/4ZIUNVPWZIAKPUK5QA4LJTHJCT/graph.json","events_json":"https://pith.science/api/pith-number/4ZIUNVPWZIAKPUK5QA4LJTHJCT/events.json","paper":"https://pith.science/paper/4ZIUNVPW"},"agent_actions":{"view_html":"https://pith.science/pith/4ZIUNVPWZIAKPUK5QA4LJTHJCT","download_json":"https://pith.science/pith/4ZIUNVPWZIAKPUK5QA4LJTHJCT.json","view_paper":"https://pith.science/paper/4ZIUNVPW","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1204.0390&json=true","fetch_graph":"https://pith.science/api/pith-number/4ZIUNVPWZIAKPUK5QA4LJTHJCT/graph.json","fetch_events":"https://pith.science/api/pith-number/4ZIUNVPWZIAKPUK5QA4LJTHJCT/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/4ZIUNVPWZIAKPUK5QA4LJTHJCT/action/timestamp_anchor","attest_storage":"https://pith.science/pith/4ZIUNVPWZIAKPUK5QA4LJTHJCT/action/storage_attestation","attest_author":"https://pith.science/pith/4ZIUNVPWZIAKPUK5QA4LJTHJCT/action/author_attestation","sign_citation":"https://pith.science/pith/4ZIUNVPWZIAKPUK5QA4LJTHJCT/action/citation_signature","submit_replication":"https://pith.science/pith/4ZIUNVPWZIAKPUK5QA4LJTHJCT/action/replication_record"}},"created_at":"2026-05-18T01:57:58.153897+00:00","updated_at":"2026-05-18T01:57:58.153897+00:00"}