{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:3CMNCIBHRLP2E5ABTZGAZMB2E6","short_pith_number":"pith:3CMNCIBH","canonical_record":{"source":{"id":"1803.08504","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-03-22T18:00:00Z","cross_cats_sorted":[],"title_canon_sha256":"3f2c2371a9a842d587aea9783183092e7abb70686267b97928e2c1a884935236","abstract_canon_sha256":"cd77ae14c06efff3c3850589b95b08727e152bc41c7a2ecbf7342de44ae76a4f"},"schema_version":"1.0"},"canonical_sha256":"d898d120278adfa274019e4c0cb03a278623fc1fc7d8f8e6a5ed0c3d222242f3","source":{"kind":"arxiv","id":"1803.08504","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1803.08504","created_at":"2026-05-18T00:02:35Z"},{"alias_kind":"arxiv_version","alias_value":"1803.08504v1","created_at":"2026-05-18T00:02:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.08504","created_at":"2026-05-18T00:02:35Z"},{"alias_kind":"pith_short_12","alias_value":"3CMNCIBHRLP2","created_at":"2026-05-18T12:32:02Z"},{"alias_kind":"pith_short_16","alias_value":"3CMNCIBHRLP2E5AB","created_at":"2026-05-18T12:32:02Z"},{"alias_kind":"pith_short_8","alias_value":"3CMNCIBH","created_at":"2026-05-18T12:32:02Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:3CMNCIBHRLP2E5ABTZGAZMB2E6","target":"record","payload":{"canonical_record":{"source":{"id":"1803.08504","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-03-22T18:00:00Z","cross_cats_sorted":[],"title_canon_sha256":"3f2c2371a9a842d587aea9783183092e7abb70686267b97928e2c1a884935236","abstract_canon_sha256":"cd77ae14c06efff3c3850589b95b08727e152bc41c7a2ecbf7342de44ae76a4f"},"schema_version":"1.0"},"canonical_sha256":"d898d120278adfa274019e4c0cb03a278623fc1fc7d8f8e6a5ed0c3d222242f3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:02:35.375240Z","signature_b64":"9LbRTFZonFPKd5DLT6KOHFFLtviSXBxp8TIjfKXQ1yG57Qacpt+XEhe3XeTQdCm/8KRm+tlV5+abDkwKzFfaBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d898d120278adfa274019e4c0cb03a278623fc1fc7d8f8e6a5ed0c3d222242f3","last_reissued_at":"2026-05-18T00:02:35.374663Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:02:35.374663Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1803.08504","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:02:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"boqf8ElW8Rhlitf7wkebY+GUIYROLffOgMgWKJ4b8GDY8cdBgk/Ajd/5KdHBzYINiJMCOgbPNwMpUOv3ss86DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T04:38:09.675882Z"},"content_sha256":"87ed27b54cd258eaf8b38643cf979dbccbadab6fb52a2376ccb97079441fe65d","schema_version":"1.0","event_id":"sha256:87ed27b54cd258eaf8b38643cf979dbccbadab6fb52a2376ccb97079441fe65d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:3CMNCIBHRLP2E5ABTZGAZMB2E6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"AGN mass estimates in large spectroscopic surveys: the effect of host galaxy light","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Giorgio Calderone, Ludovica Varisco, Massimo Dotti, Tullia Sbarrato","submitted_at":"2018-03-22T18:00:00Z","abstract_excerpt":"Virial-based methods for estimating active supermassive black hole masses are now commonly used on extremely large spectroscopic quasar catalogues. Most spectral analyses, though, do not pay enough attention to a detailed continuum decomposition. To understand how this affects virial mass estimate results, we test the influence of host galaxy light on them, along with Balmer continuum component. A detailed fit with the new spectroscopic analysis software QSFit demonstrated that the presence or absence of continuum components do not affect significantly the virial-based results for our sample. "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.08504","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:02:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1XnknxWv0fxg+r08LPu4k4GyLve8uSXqD+Nzu7ijbl0n267Xvfuvj79Mrog8WfF2X950dVkibXg0aKpVKML+AQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T04:38:09.676229Z"},"content_sha256":"2df14864c6a853c14723abe2b5dc82f253c408f110209f58c534decb61b962de","schema_version":"1.0","event_id":"sha256:2df14864c6a853c14723abe2b5dc82f253c408f110209f58c534decb61b962de"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/3CMNCIBHRLP2E5ABTZGAZMB2E6/bundle.json","state_url":"https://pith.science/pith/3CMNCIBHRLP2E5ABTZGAZMB2E6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/3CMNCIBHRLP2E5ABTZGAZMB2E6/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-03T04:38:09Z","links":{"resolver":"https://pith.science/pith/3CMNCIBHRLP2E5ABTZGAZMB2E6","bundle":"https://pith.science/pith/3CMNCIBHRLP2E5ABTZGAZMB2E6/bundle.json","state":"https://pith.science/pith/3CMNCIBHRLP2E5ABTZGAZMB2E6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/3CMNCIBHRLP2E5ABTZGAZMB2E6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:3CMNCIBHRLP2E5ABTZGAZMB2E6","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"cd77ae14c06efff3c3850589b95b08727e152bc41c7a2ecbf7342de44ae76a4f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-03-22T18:00:00Z","title_canon_sha256":"3f2c2371a9a842d587aea9783183092e7abb70686267b97928e2c1a884935236"},"schema_version":"1.0","source":{"id":"1803.08504","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1803.08504","created_at":"2026-05-18T00:02:35Z"},{"alias_kind":"arxiv_version","alias_value":"1803.08504v1","created_at":"2026-05-18T00:02:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.08504","created_at":"2026-05-18T00:02:35Z"},{"alias_kind":"pith_short_12","alias_value":"3CMNCIBHRLP2","created_at":"2026-05-18T12:32:02Z"},{"alias_kind":"pith_short_16","alias_value":"3CMNCIBHRLP2E5AB","created_at":"2026-05-18T12:32:02Z"},{"alias_kind":"pith_short_8","alias_value":"3CMNCIBH","created_at":"2026-05-18T12:32:02Z"}],"graph_snapshots":[{"event_id":"sha256:2df14864c6a853c14723abe2b5dc82f253c408f110209f58c534decb61b962de","target":"graph","created_at":"2026-05-18T00:02:35Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"Virial-based methods for estimating active supermassive black hole masses are now commonly used on extremely large spectroscopic quasar catalogues. Most spectral analyses, though, do not pay enough attention to a detailed continuum decomposition. To understand how this affects virial mass estimate results, we test the influence of host galaxy light on them, along with Balmer continuum component. A detailed fit with the new spectroscopic analysis software QSFit demonstrated that the presence or absence of continuum components do not affect significantly the virial-based results for our sample. ","authors_text":"Giorgio Calderone, Ludovica Varisco, Massimo Dotti, Tullia Sbarrato","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-03-22T18:00:00Z","title":"AGN mass estimates in large spectroscopic surveys: the effect of host galaxy light"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.08504","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:87ed27b54cd258eaf8b38643cf979dbccbadab6fb52a2376ccb97079441fe65d","target":"record","created_at":"2026-05-18T00:02:35Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"cd77ae14c06efff3c3850589b95b08727e152bc41c7a2ecbf7342de44ae76a4f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-03-22T18:00:00Z","title_canon_sha256":"3f2c2371a9a842d587aea9783183092e7abb70686267b97928e2c1a884935236"},"schema_version":"1.0","source":{"id":"1803.08504","kind":"arxiv","version":1}},"canonical_sha256":"d898d120278adfa274019e4c0cb03a278623fc1fc7d8f8e6a5ed0c3d222242f3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d898d120278adfa274019e4c0cb03a278623fc1fc7d8f8e6a5ed0c3d222242f3","first_computed_at":"2026-05-18T00:02:35.374663Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:02:35.374663Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9LbRTFZonFPKd5DLT6KOHFFLtviSXBxp8TIjfKXQ1yG57Qacpt+XEhe3XeTQdCm/8KRm+tlV5+abDkwKzFfaBA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:02:35.375240Z","signed_message":"canonical_sha256_bytes"},"source_id":"1803.08504","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:87ed27b54cd258eaf8b38643cf979dbccbadab6fb52a2376ccb97079441fe65d","sha256:2df14864c6a853c14723abe2b5dc82f253c408f110209f58c534decb61b962de"],"state_sha256":"0361b244936c057223afbe3a346ae5f18dbcac4929bde92cea330ea09990e714"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PcLHXV/g5hmDdCwhPtK6sg6DvobvzrkCMf4kxxiWxDPcI8+xI1BKdgFomtdLBRCvyW6Pq20our7doaheQFqSBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T04:38:09.678333Z","bundle_sha256":"a2801e9b6f9e10100694f03cb94ec48cb0fc3f37576fb7c93193ff9fc778ac93"}}