{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2012:ZC5ZUKE2ESB3W63FFCANISDGT4","short_pith_number":"pith:ZC5ZUKE2","schema_version":"1.0","canonical_sha256":"c8bb9a289a2483bb7b652880d448669f0c0949fa2685e64599a440809a64f7e2","source":{"kind":"arxiv","id":"1208.1505","version":1},"attestation_state":"computed","paper":{"title":"A Universal Neutral Gas Profile for Nearby Disk Galaxies","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.CO","authors_text":"F. Bigiel, L. Blitz","submitted_at":"2012-08-07T20:00:02Z","abstract_excerpt":"Based on sensitive CO measurements from HERACLES and HI data from THINGS, we show that the azimuthally averaged radial distribution of the neutral gas surface density (Sigma_HI + Sigma_H2) in 33 nearby spiral galaxies exhibits a well-constrained universal exponential distribution beyond 0.2*r25 (inside of which the scatter is large) with less than a factor of two scatter out to two optical radii r25. Scaling the radius to r25 and the total gas surface density to the surface density at the transition radius, i.e., where Sigma_HI and Sigma_H2 are equal, as well as removing galaxies that are inte"},"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":"1208.1505","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-08-07T20:00:02Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"7f5511320d7812d3c5232152d7c53af4add0bdf5ce97e9b32c072d6979989760","abstract_canon_sha256":"8d21411e6183c3a9fcb1609b5a14bfb4ad749a878bdcfde721d185474f6d5aa0"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:55:22.038566Z","signature_b64":"Tfq/L8y0HtYYiPPUzMH/en+UwZKrTIxy1FUMtgIvTEkORjiTnFMoj9bbW/E6aYb7wzl5dTNf08UTnwGXmbMsDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c8bb9a289a2483bb7b652880d448669f0c0949fa2685e64599a440809a64f7e2","last_reissued_at":"2026-05-18T01:55:22.038057Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:55:22.038057Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"A Universal Neutral Gas Profile for Nearby Disk Galaxies","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.CO","authors_text":"F. Bigiel, L. Blitz","submitted_at":"2012-08-07T20:00:02Z","abstract_excerpt":"Based on sensitive CO measurements from HERACLES and HI data from THINGS, we show that the azimuthally averaged radial distribution of the neutral gas surface density (Sigma_HI + Sigma_H2) in 33 nearby spiral galaxies exhibits a well-constrained universal exponential distribution beyond 0.2*r25 (inside of which the scatter is large) with less than a factor of two scatter out to two optical radii r25. Scaling the radius to r25 and the total gas surface density to the surface density at the transition radius, i.e., where Sigma_HI and Sigma_H2 are equal, as well as removing galaxies that are inte"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1208.1505","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":"1208.1505","created_at":"2026-05-18T01:55:22.038130+00:00"},{"alias_kind":"arxiv_version","alias_value":"1208.1505v1","created_at":"2026-05-18T01:55:22.038130+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1208.1505","created_at":"2026-05-18T01:55:22.038130+00:00"},{"alias_kind":"pith_short_12","alias_value":"ZC5ZUKE2ESB3","created_at":"2026-05-18T12:27:30.460161+00:00"},{"alias_kind":"pith_short_16","alias_value":"ZC5ZUKE2ESB3W63F","created_at":"2026-05-18T12:27:30.460161+00:00"},{"alias_kind":"pith_short_8","alias_value":"ZC5ZUKE2","created_at":"2026-05-18T12:27:30.460161+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/ZC5ZUKE2ESB3W63FFCANISDGT4","json":"https://pith.science/pith/ZC5ZUKE2ESB3W63FFCANISDGT4.json","graph_json":"https://pith.science/api/pith-number/ZC5ZUKE2ESB3W63FFCANISDGT4/graph.json","events_json":"https://pith.science/api/pith-number/ZC5ZUKE2ESB3W63FFCANISDGT4/events.json","paper":"https://pith.science/paper/ZC5ZUKE2"},"agent_actions":{"view_html":"https://pith.science/pith/ZC5ZUKE2ESB3W63FFCANISDGT4","download_json":"https://pith.science/pith/ZC5ZUKE2ESB3W63FFCANISDGT4.json","view_paper":"https://pith.science/paper/ZC5ZUKE2","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1208.1505&json=true","fetch_graph":"https://pith.science/api/pith-number/ZC5ZUKE2ESB3W63FFCANISDGT4/graph.json","fetch_events":"https://pith.science/api/pith-number/ZC5ZUKE2ESB3W63FFCANISDGT4/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/ZC5ZUKE2ESB3W63FFCANISDGT4/action/timestamp_anchor","attest_storage":"https://pith.science/pith/ZC5ZUKE2ESB3W63FFCANISDGT4/action/storage_attestation","attest_author":"https://pith.science/pith/ZC5ZUKE2ESB3W63FFCANISDGT4/action/author_attestation","sign_citation":"https://pith.science/pith/ZC5ZUKE2ESB3W63FFCANISDGT4/action/citation_signature","submit_replication":"https://pith.science/pith/ZC5ZUKE2ESB3W63FFCANISDGT4/action/replication_record"}},"created_at":"2026-05-18T01:55:22.038130+00:00","updated_at":"2026-05-18T01:55:22.038130+00:00"}