{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2011:MLD2JI5WBJVXTBQGJZPVNBBEQW","short_pith_number":"pith:MLD2JI5W","schema_version":"1.0","canonical_sha256":"62c7a4a3b60a6b7986064e5f56842485a1305611e7daa4573644af80b218e829","source":{"kind":"arxiv","id":"1108.1808","version":1},"attestation_state":"computed","paper":{"title":"Is there a black hole in NGC 4382?","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.CO","authors_text":"Douglas O. Richstone, Jason Pinkney, John Kormendy, Karl Gebhardt, Kayhan Gultekin, Ralf Bender, S. M. Faber, Tod R. Lauer","submitted_at":"2011-08-08T20:12:10Z","abstract_excerpt":"We present HST STIS observations of the galaxy NGC 4382 (M85) and axisymmetric models of the galaxy to determine mass-to-light ration (M/L, V-band) and central black hole mass (M_BH). We find M/L = 3.74 +/- 0.1 (solar units) and M_BH = 1.3 (+5.2, -1.2) \\times 10^7 M_sun at an assumed distance of 17.9 Mpc, consistent with no black hole. The upper limit, M_BH < 9.6 \\times 10^7 M_sun (2{\\sigma}) or M_BH < 1.4 \\times 10^8 M_sun (3{\\sigma}) is consistent with the current M-{\\sigma} relation, which predicts M_BH = 8.8 \\times 10^7 M_sun at {\\sigma}_e = 182 km/s, but low for the current M-L relation, "},"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":"1108.1808","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-08-08T20:12:10Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"121b466b4ff07e1203664b4cc63a9f85ee5d2e0633c0a06f02244e730525612d","abstract_canon_sha256":"d8b5f1be18969f047ab52b814ad808cbc8b5c0e9e62326afebcaee32a5712745"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:01:00.096707Z","signature_b64":"rP23gKqNaXn6yEBCCescoBAHwrugYy5yYTDeJb2MPidP37Qko+qjjRdLFdbBqRwuw5+Y7BgMI89cOFSFAaQ2AA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"62c7a4a3b60a6b7986064e5f56842485a1305611e7daa4573644af80b218e829","last_reissued_at":"2026-05-18T02:01:00.096063Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:01:00.096063Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Is there a black hole in NGC 4382?","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.CO","authors_text":"Douglas O. Richstone, Jason Pinkney, John Kormendy, Karl Gebhardt, Kayhan Gultekin, Ralf Bender, S. M. Faber, Tod R. Lauer","submitted_at":"2011-08-08T20:12:10Z","abstract_excerpt":"We present HST STIS observations of the galaxy NGC 4382 (M85) and axisymmetric models of the galaxy to determine mass-to-light ration (M/L, V-band) and central black hole mass (M_BH). We find M/L = 3.74 +/- 0.1 (solar units) and M_BH = 1.3 (+5.2, -1.2) \\times 10^7 M_sun at an assumed distance of 17.9 Mpc, consistent with no black hole. The upper limit, M_BH < 9.6 \\times 10^7 M_sun (2{\\sigma}) or M_BH < 1.4 \\times 10^8 M_sun (3{\\sigma}) is consistent with the current M-{\\sigma} relation, which predicts M_BH = 8.8 \\times 10^7 M_sun at {\\sigma}_e = 182 km/s, but low for the current M-L relation, "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1108.1808","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":"1108.1808","created_at":"2026-05-18T02:01:00.096149+00:00"},{"alias_kind":"arxiv_version","alias_value":"1108.1808v1","created_at":"2026-05-18T02:01:00.096149+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1108.1808","created_at":"2026-05-18T02:01:00.096149+00:00"},{"alias_kind":"pith_short_12","alias_value":"MLD2JI5WBJVX","created_at":"2026-05-18T12:26:34.985390+00:00"},{"alias_kind":"pith_short_16","alias_value":"MLD2JI5WBJVXTBQG","created_at":"2026-05-18T12:26:34.985390+00:00"},{"alias_kind":"pith_short_8","alias_value":"MLD2JI5W","created_at":"2026-05-18T12:26:34.985390+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/MLD2JI5WBJVXTBQGJZPVNBBEQW","json":"https://pith.science/pith/MLD2JI5WBJVXTBQGJZPVNBBEQW.json","graph_json":"https://pith.science/api/pith-number/MLD2JI5WBJVXTBQGJZPVNBBEQW/graph.json","events_json":"https://pith.science/api/pith-number/MLD2JI5WBJVXTBQGJZPVNBBEQW/events.json","paper":"https://pith.science/paper/MLD2JI5W"},"agent_actions":{"view_html":"https://pith.science/pith/MLD2JI5WBJVXTBQGJZPVNBBEQW","download_json":"https://pith.science/pith/MLD2JI5WBJVXTBQGJZPVNBBEQW.json","view_paper":"https://pith.science/paper/MLD2JI5W","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1108.1808&json=true","fetch_graph":"https://pith.science/api/pith-number/MLD2JI5WBJVXTBQGJZPVNBBEQW/graph.json","fetch_events":"https://pith.science/api/pith-number/MLD2JI5WBJVXTBQGJZPVNBBEQW/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/MLD2JI5WBJVXTBQGJZPVNBBEQW/action/timestamp_anchor","attest_storage":"https://pith.science/pith/MLD2JI5WBJVXTBQGJZPVNBBEQW/action/storage_attestation","attest_author":"https://pith.science/pith/MLD2JI5WBJVXTBQGJZPVNBBEQW/action/author_attestation","sign_citation":"https://pith.science/pith/MLD2JI5WBJVXTBQGJZPVNBBEQW/action/citation_signature","submit_replication":"https://pith.science/pith/MLD2JI5WBJVXTBQGJZPVNBBEQW/action/replication_record"}},"created_at":"2026-05-18T02:01:00.096149+00:00","updated_at":"2026-05-18T02:01:00.096149+00:00"}