{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2017:OGLTXYU24OLS6LJTA5TMFQGP44","short_pith_number":"pith:OGLTXYU2","schema_version":"1.0","canonical_sha256":"71973be29ae3972f2d330766c2c0cfe70b659253c266dbd35392cf815bfedb67","source":{"kind":"arxiv","id":"1704.05252","version":2},"attestation_state":"computed","paper":{"title":"Physical conditions of the molecular gas in metal-poor galaxies","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"A. Lundgren, A. Weiss, C. Henkel, F. Combes, K.M. Menten, L.K. Hunt, L. Testi, P. Caselli, R. Maiolino, S. Garcia-Burillo, V. Casasola","submitted_at":"2017-04-18T09:44:44Z","abstract_excerpt":"Studying the molecular component of the interstellar medium in metal-poor galaxies has been challenging because of the faintness of carbon monoxide emission, the most common proxy of H2. Here we present new detections of molecular gas at low metallicities, and assess the physical conditions in the gas through various CO transitions for 8 galaxies. For one, NGC 1140 (Z/Zsun ~ 0.3), two detections of 13CO isotopologues and atomic carbon, [CI](1-0), and an upper limit for HCN(1-0) are also reported. After correcting to a common beam size, we compared 12CO(2-1)/12CO(1-0) (R21) and 12CO(3-2)/12CO(1"},"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":"1704.05252","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-04-18T09:44:44Z","cross_cats_sorted":[],"title_canon_sha256":"1b0b939276defd6898194cfeaeb02a2ca3ccf547ed998274edd2f32c26775347","abstract_canon_sha256":"0078ef971e400e44f2710a3ded522339afac0df040fb8efee4950609bc3ff8e5"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:32:10.765066Z","signature_b64":"D1bzAR+c2tx+E8JYpXRSzbyb4apyPNLgVV3xsvNEuT/Qy9qopKlbyVdsA4t4mYY/Nwupbmm/WeMN8X19i1u7BA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"71973be29ae3972f2d330766c2c0cfe70b659253c266dbd35392cf815bfedb67","last_reissued_at":"2026-05-18T00:32:10.764394Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:32:10.764394Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Physical conditions of the molecular gas in metal-poor galaxies","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"A. Lundgren, A. Weiss, C. Henkel, F. Combes, K.M. Menten, L.K. Hunt, L. Testi, P. Caselli, R. Maiolino, S. Garcia-Burillo, V. Casasola","submitted_at":"2017-04-18T09:44:44Z","abstract_excerpt":"Studying the molecular component of the interstellar medium in metal-poor galaxies has been challenging because of the faintness of carbon monoxide emission, the most common proxy of H2. Here we present new detections of molecular gas at low metallicities, and assess the physical conditions in the gas through various CO transitions for 8 galaxies. For one, NGC 1140 (Z/Zsun ~ 0.3), two detections of 13CO isotopologues and atomic carbon, [CI](1-0), and an upper limit for HCN(1-0) are also reported. After correcting to a common beam size, we compared 12CO(2-1)/12CO(1-0) (R21) and 12CO(3-2)/12CO(1"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1704.05252","kind":"arxiv","version":2},"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":"1704.05252","created_at":"2026-05-18T00:32:10.764524+00:00"},{"alias_kind":"arxiv_version","alias_value":"1704.05252v2","created_at":"2026-05-18T00:32:10.764524+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1704.05252","created_at":"2026-05-18T00:32:10.764524+00:00"},{"alias_kind":"pith_short_12","alias_value":"OGLTXYU24OLS","created_at":"2026-05-18T12:31:34.259226+00:00"},{"alias_kind":"pith_short_16","alias_value":"OGLTXYU24OLS6LJT","created_at":"2026-05-18T12:31:34.259226+00:00"},{"alias_kind":"pith_short_8","alias_value":"OGLTXYU2","created_at":"2026-05-18T12:31:34.259226+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/OGLTXYU24OLS6LJTA5TMFQGP44","json":"https://pith.science/pith/OGLTXYU24OLS6LJTA5TMFQGP44.json","graph_json":"https://pith.science/api/pith-number/OGLTXYU24OLS6LJTA5TMFQGP44/graph.json","events_json":"https://pith.science/api/pith-number/OGLTXYU24OLS6LJTA5TMFQGP44/events.json","paper":"https://pith.science/paper/OGLTXYU2"},"agent_actions":{"view_html":"https://pith.science/pith/OGLTXYU24OLS6LJTA5TMFQGP44","download_json":"https://pith.science/pith/OGLTXYU24OLS6LJTA5TMFQGP44.json","view_paper":"https://pith.science/paper/OGLTXYU2","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1704.05252&json=true","fetch_graph":"https://pith.science/api/pith-number/OGLTXYU24OLS6LJTA5TMFQGP44/graph.json","fetch_events":"https://pith.science/api/pith-number/OGLTXYU24OLS6LJTA5TMFQGP44/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/OGLTXYU24OLS6LJTA5TMFQGP44/action/timestamp_anchor","attest_storage":"https://pith.science/pith/OGLTXYU24OLS6LJTA5TMFQGP44/action/storage_attestation","attest_author":"https://pith.science/pith/OGLTXYU24OLS6LJTA5TMFQGP44/action/author_attestation","sign_citation":"https://pith.science/pith/OGLTXYU24OLS6LJTA5TMFQGP44/action/citation_signature","submit_replication":"https://pith.science/pith/OGLTXYU24OLS6LJTA5TMFQGP44/action/replication_record"}},"created_at":"2026-05-18T00:32:10.764524+00:00","updated_at":"2026-05-18T00:32:10.764524+00:00"}