{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2009:FKFY4QJRQNDECKOCQMG4OI42VO","short_pith_number":"pith:FKFY4QJR","schema_version":"1.0","canonical_sha256":"2a8b8e413183464129c2830dc7239aabb85d7e5ee932b100db5b2de07b587977","source":{"kind":"arxiv","id":"0909.4245","version":1},"attestation_state":"computed","paper":{"title":"The Future of Direct Supermassive Black Hole Mass Estimates","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"(2) Space Telescope Science Institute), A. M. Koekemoer (2) ((1) Rochester Institute of Technology, D. Batcheldor (1)","submitted_at":"2009-09-23T16:13:17Z","abstract_excerpt":"(Abridged) The repeated discovery of supermassive black holes (SMBHs) at the centers of galactic bulges, and the discovery of relations between the SMBH mass (M) and the properties of these bulges, has been fundamental in directing our understanding of both galaxy and SMBH formation and evolution. However, there are still many questions surrounding the SMBH - galaxy relations. For example, are the scaling relations linear and constant throughout cosmic history, and do all SMBHs lie on the scaling relations? These questions can only be answered by further high quality direct M estimates from a "},"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":"0909.4245","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-09-23T16:13:17Z","cross_cats_sorted":[],"title_canon_sha256":"3390ea5adff713e4fb8dbefa1847ae19b79759f064991dea5d032e10ffc3c088","abstract_canon_sha256":"f06d7e483b013df7cc58914434318e9cf2c7ab57e3a46ebc9c3816d4f9a29480"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:11:44.807607Z","signature_b64":"1/PIvq7C7HmFuJnbzA2yCfaplv3d58hfzHCrqn0ICDL84SWycZgvbFe9btoSdodwcDtFH+4ZIol1frfQ6vxbBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2a8b8e413183464129c2830dc7239aabb85d7e5ee932b100db5b2de07b587977","last_reissued_at":"2026-05-18T02:11:44.806916Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:11:44.806916Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The Future of Direct Supermassive Black Hole Mass Estimates","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"(2) Space Telescope Science Institute), A. M. Koekemoer (2) ((1) Rochester Institute of Technology, D. Batcheldor (1)","submitted_at":"2009-09-23T16:13:17Z","abstract_excerpt":"(Abridged) The repeated discovery of supermassive black holes (SMBHs) at the centers of galactic bulges, and the discovery of relations between the SMBH mass (M) and the properties of these bulges, has been fundamental in directing our understanding of both galaxy and SMBH formation and evolution. However, there are still many questions surrounding the SMBH - galaxy relations. For example, are the scaling relations linear and constant throughout cosmic history, and do all SMBHs lie on the scaling relations? These questions can only be answered by further high quality direct M estimates from a "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0909.4245","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":"0909.4245","created_at":"2026-05-18T02:11:44.807016+00:00"},{"alias_kind":"arxiv_version","alias_value":"0909.4245v1","created_at":"2026-05-18T02:11:44.807016+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0909.4245","created_at":"2026-05-18T02:11:44.807016+00:00"},{"alias_kind":"pith_short_12","alias_value":"FKFY4QJRQNDE","created_at":"2026-05-18T12:25:59.703012+00:00"},{"alias_kind":"pith_short_16","alias_value":"FKFY4QJRQNDECKOC","created_at":"2026-05-18T12:25:59.703012+00:00"},{"alias_kind":"pith_short_8","alias_value":"FKFY4QJR","created_at":"2026-05-18T12:25:59.703012+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/FKFY4QJRQNDECKOCQMG4OI42VO","json":"https://pith.science/pith/FKFY4QJRQNDECKOCQMG4OI42VO.json","graph_json":"https://pith.science/api/pith-number/FKFY4QJRQNDECKOCQMG4OI42VO/graph.json","events_json":"https://pith.science/api/pith-number/FKFY4QJRQNDECKOCQMG4OI42VO/events.json","paper":"https://pith.science/paper/FKFY4QJR"},"agent_actions":{"view_html":"https://pith.science/pith/FKFY4QJRQNDECKOCQMG4OI42VO","download_json":"https://pith.science/pith/FKFY4QJRQNDECKOCQMG4OI42VO.json","view_paper":"https://pith.science/paper/FKFY4QJR","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=0909.4245&json=true","fetch_graph":"https://pith.science/api/pith-number/FKFY4QJRQNDECKOCQMG4OI42VO/graph.json","fetch_events":"https://pith.science/api/pith-number/FKFY4QJRQNDECKOCQMG4OI42VO/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/FKFY4QJRQNDECKOCQMG4OI42VO/action/timestamp_anchor","attest_storage":"https://pith.science/pith/FKFY4QJRQNDECKOCQMG4OI42VO/action/storage_attestation","attest_author":"https://pith.science/pith/FKFY4QJRQNDECKOCQMG4OI42VO/action/author_attestation","sign_citation":"https://pith.science/pith/FKFY4QJRQNDECKOCQMG4OI42VO/action/citation_signature","submit_replication":"https://pith.science/pith/FKFY4QJRQNDECKOCQMG4OI42VO/action/replication_record"}},"created_at":"2026-05-18T02:11:44.807016+00:00","updated_at":"2026-05-18T02:11:44.807016+00:00"}