{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2011:O2JVONRBQKID2SA5K6MK3Y7XWP","short_pith_number":"pith:O2JVONRB","schema_version":"1.0","canonical_sha256":"769357362182903d481d5798ade3f7b3eed4c72abb9cd746aab098f12d8af1c5","source":{"kind":"arxiv","id":"1103.5540","version":1},"attestation_state":"computed","paper":{"title":"12CO, 13CO and C18O observations along the major axes of nearby bright infrared galaxies","license":"http://creativecommons.org/licenses/by/3.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Qinghua Tan, Xiaoyang Xia, Yu Gao, Zhiyu Zhang","submitted_at":"2011-03-29T03:40:58Z","abstract_excerpt":"We present simultaneous observations of CO,13CO and C18O J=1-0 emission in 11 nearby (cz<1000 km/s) bright infrared galaxies. Both 12CO and 13CO are detected in the centers of all galaxies, except for 13CO in NGC 3031. We have also detected C18O, CS J=2-1, and HCO+ J=1-0 emission in the nuclear regions of M82 and M51. These are the first systematical extragalactic detections of 12CO and its isotopes from the PMO 14m telescope. We have conducted half-beam spacing mapping of M82 over an area of 4'*2.5' and major axis mapping of NGC 3627, NGC 3628, NGC 4631, and M51. The radial distributions of 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":"1103.5540","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/3.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-03-29T03:40:58Z","cross_cats_sorted":[],"title_canon_sha256":"7fc219163cb525b61b38043db6c580fb7ce76d6c07969f225c11685cdb154839","abstract_canon_sha256":"518263a33b69c685017dd2cf0cd5d1b55cf2a246f458920dc9985b265c1dbae2"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:02:43.723048Z","signature_b64":"r1y62rrcTVGRsmRDxkOykFJE4c1KTpAGIa0uxfcjDnHwYIkvjb+ALNpStcwz72cOxiF1hnSfxWFRb6GNF8NkBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"769357362182903d481d5798ade3f7b3eed4c72abb9cd746aab098f12d8af1c5","last_reissued_at":"2026-05-18T02:02:43.722352Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:02:43.722352Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"12CO, 13CO and C18O observations along the major axes of nearby bright infrared galaxies","license":"http://creativecommons.org/licenses/by/3.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Qinghua Tan, Xiaoyang Xia, Yu Gao, Zhiyu Zhang","submitted_at":"2011-03-29T03:40:58Z","abstract_excerpt":"We present simultaneous observations of CO,13CO and C18O J=1-0 emission in 11 nearby (cz<1000 km/s) bright infrared galaxies. Both 12CO and 13CO are detected in the centers of all galaxies, except for 13CO in NGC 3031. We have also detected C18O, CS J=2-1, and HCO+ J=1-0 emission in the nuclear regions of M82 and M51. These are the first systematical extragalactic detections of 12CO and its isotopes from the PMO 14m telescope. We have conducted half-beam spacing mapping of M82 over an area of 4'*2.5' and major axis mapping of NGC 3627, NGC 3628, NGC 4631, and M51. The radial distributions of 1"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1103.5540","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":"1103.5540","created_at":"2026-05-18T02:02:43.722470+00:00"},{"alias_kind":"arxiv_version","alias_value":"1103.5540v1","created_at":"2026-05-18T02:02:43.722470+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1103.5540","created_at":"2026-05-18T02:02:43.722470+00:00"},{"alias_kind":"pith_short_12","alias_value":"O2JVONRBQKID","created_at":"2026-05-18T12:26:37.096874+00:00"},{"alias_kind":"pith_short_16","alias_value":"O2JVONRBQKID2SA5","created_at":"2026-05-18T12:26:37.096874+00:00"},{"alias_kind":"pith_short_8","alias_value":"O2JVONRB","created_at":"2026-05-18T12:26:37.096874+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/O2JVONRBQKID2SA5K6MK3Y7XWP","json":"https://pith.science/pith/O2JVONRBQKID2SA5K6MK3Y7XWP.json","graph_json":"https://pith.science/api/pith-number/O2JVONRBQKID2SA5K6MK3Y7XWP/graph.json","events_json":"https://pith.science/api/pith-number/O2JVONRBQKID2SA5K6MK3Y7XWP/events.json","paper":"https://pith.science/paper/O2JVONRB"},"agent_actions":{"view_html":"https://pith.science/pith/O2JVONRBQKID2SA5K6MK3Y7XWP","download_json":"https://pith.science/pith/O2JVONRBQKID2SA5K6MK3Y7XWP.json","view_paper":"https://pith.science/paper/O2JVONRB","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1103.5540&json=true","fetch_graph":"https://pith.science/api/pith-number/O2JVONRBQKID2SA5K6MK3Y7XWP/graph.json","fetch_events":"https://pith.science/api/pith-number/O2JVONRBQKID2SA5K6MK3Y7XWP/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/O2JVONRBQKID2SA5K6MK3Y7XWP/action/timestamp_anchor","attest_storage":"https://pith.science/pith/O2JVONRBQKID2SA5K6MK3Y7XWP/action/storage_attestation","attest_author":"https://pith.science/pith/O2JVONRBQKID2SA5K6MK3Y7XWP/action/author_attestation","sign_citation":"https://pith.science/pith/O2JVONRBQKID2SA5K6MK3Y7XWP/action/citation_signature","submit_replication":"https://pith.science/pith/O2JVONRBQKID2SA5K6MK3Y7XWP/action/replication_record"}},"created_at":"2026-05-18T02:02:43.722470+00:00","updated_at":"2026-05-18T02:02:43.722470+00:00"}