{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2006:K4KVKNMDKZK4JFTGSKKHGOL2CL","short_pith_number":"pith:K4KVKNMD","canonical_record":{"source":{"id":"astro-ph/0610624","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2006-10-20T15:28:22Z","cross_cats_sorted":[],"title_canon_sha256":"b848b5baac639a2e8276eda3db8502a8c07a7df26d1c7d35037a8c7e9285e89d","abstract_canon_sha256":"cb3332e95c242348759a2d1269d0f753aa8f0d1ec6d3e0b55add03b2144c7e8c"},"schema_version":"1.0"},"canonical_sha256":"57155535835655c49666929473397a12e96807ed684757a29a5b20d519d1569a","source":{"kind":"arxiv","id":"astro-ph/0610624","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0610624","created_at":"2026-05-18T01:40:29Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0610624v1","created_at":"2026-05-18T01:40:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0610624","created_at":"2026-05-18T01:40:29Z"},{"alias_kind":"pith_short_12","alias_value":"K4KVKNMDKZK4","created_at":"2026-05-18T12:25:54Z"},{"alias_kind":"pith_short_16","alias_value":"K4KVKNMDKZK4JFTG","created_at":"2026-05-18T12:25:54Z"},{"alias_kind":"pith_short_8","alias_value":"K4KVKNMD","created_at":"2026-05-18T12:25:54Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2006:K4KVKNMDKZK4JFTGSKKHGOL2CL","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0610624","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2006-10-20T15:28:22Z","cross_cats_sorted":[],"title_canon_sha256":"b848b5baac639a2e8276eda3db8502a8c07a7df26d1c7d35037a8c7e9285e89d","abstract_canon_sha256":"cb3332e95c242348759a2d1269d0f753aa8f0d1ec6d3e0b55add03b2144c7e8c"},"schema_version":"1.0"},"canonical_sha256":"57155535835655c49666929473397a12e96807ed684757a29a5b20d519d1569a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:40:29.203858Z","signature_b64":"MFiyVx+xWtLNpqEj7KQ/Iuo3Nvkpxle45sfs9nWNieVWB0UX/44JkjmxaXs1wf55ooLj5tHHG5PIhWJ5M4KtBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"57155535835655c49666929473397a12e96807ed684757a29a5b20d519d1569a","last_reissued_at":"2026-05-18T01:40:29.203379Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:40:29.203379Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0610624","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":"2026-05-18T01:40:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OpPqJvosL7wmigPl3bd3DdbJ9WOQJJQdrt7vQ/roSycbpzPShLCAiKC+zTa3l3GgeMGHprAnhE2rGYjKX8gDDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-20T10:19:34.839859Z"},"content_sha256":"7c09571ebe2937e212cecb89ac122119f56b4834338fda762f2fe4240241e74d","schema_version":"1.0","event_id":"sha256:7c09571ebe2937e212cecb89ac122119f56b4834338fda762f2fe4240241e74d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2006:K4KVKNMDKZK4JFTGSKKHGOL2CL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Upper limits on the mass of supermassive black holes from HST/STIS archival data","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"(2) Groningen University, (3) University of Hertfordshire, A. Beifiori (1), A. Pizzella (1), E. Dalla Bonta` (1), E. M. Corsini (1), F. Bertola (1) ((1) Padua University, Italy, L. Coccato (2), M. Sarzi (3), The Netherlands, UK)","submitted_at":"2006-10-20T15:28:22Z","abstract_excerpt":"The growth of supermassive black holes (SBHs) appears to be closely linked with the formation of spheroids. There is a pressing need to acquire better statistics on SBH masses, since the existing samples are preferentially weighted toward early-type galaxies with very massive SBHs. With this motivation we started a project aimed at measuring upper limits on the mass of the SBHs in the center of all the nearby galaxies (D<100 Mpc) for which STIS/G750M spectra are available in the HST archive. These upper limits will be derived by modeling the central emission-line widths observed in the Halpha "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0610624","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":"2026-05-18T01:40:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2VhxQKHTDxP9Pqj1Xv9fd5J2iEhenwQUHzy/wtq4du1rkCd1SghyYgQ3KWl1CP7gtlrHs7DOU/2JHWQDc+QLCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-20T10:19:34.840460Z"},"content_sha256":"efec6d268047026828895713ca07c925c67eb0e02b4889701c44b5131d4f25d1","schema_version":"1.0","event_id":"sha256:efec6d268047026828895713ca07c925c67eb0e02b4889701c44b5131d4f25d1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/K4KVKNMDKZK4JFTGSKKHGOL2CL/bundle.json","state_url":"https://pith.science/pith/K4KVKNMDKZK4JFTGSKKHGOL2CL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/K4KVKNMDKZK4JFTGSKKHGOL2CL/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":"2026-05-20T10:19:34Z","links":{"resolver":"https://pith.science/pith/K4KVKNMDKZK4JFTGSKKHGOL2CL","bundle":"https://pith.science/pith/K4KVKNMDKZK4JFTGSKKHGOL2CL/bundle.json","state":"https://pith.science/pith/K4KVKNMDKZK4JFTGSKKHGOL2CL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/K4KVKNMDKZK4JFTGSKKHGOL2CL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2006:K4KVKNMDKZK4JFTGSKKHGOL2CL","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":"cb3332e95c242348759a2d1269d0f753aa8f0d1ec6d3e0b55add03b2144c7e8c","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2006-10-20T15:28:22Z","title_canon_sha256":"b848b5baac639a2e8276eda3db8502a8c07a7df26d1c7d35037a8c7e9285e89d"},"schema_version":"1.0","source":{"id":"astro-ph/0610624","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0610624","created_at":"2026-05-18T01:40:29Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0610624v1","created_at":"2026-05-18T01:40:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0610624","created_at":"2026-05-18T01:40:29Z"},{"alias_kind":"pith_short_12","alias_value":"K4KVKNMDKZK4","created_at":"2026-05-18T12:25:54Z"},{"alias_kind":"pith_short_16","alias_value":"K4KVKNMDKZK4JFTG","created_at":"2026-05-18T12:25:54Z"},{"alias_kind":"pith_short_8","alias_value":"K4KVKNMD","created_at":"2026-05-18T12:25:54Z"}],"graph_snapshots":[{"event_id":"sha256:efec6d268047026828895713ca07c925c67eb0e02b4889701c44b5131d4f25d1","target":"graph","created_at":"2026-05-18T01:40:29Z","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":"The growth of supermassive black holes (SBHs) appears to be closely linked with the formation of spheroids. There is a pressing need to acquire better statistics on SBH masses, since the existing samples are preferentially weighted toward early-type galaxies with very massive SBHs. With this motivation we started a project aimed at measuring upper limits on the mass of the SBHs in the center of all the nearby galaxies (D<100 Mpc) for which STIS/G750M spectra are available in the HST archive. These upper limits will be derived by modeling the central emission-line widths observed in the Halpha ","authors_text":"(2) Groningen University, (3) University of Hertfordshire, A. Beifiori (1), A. Pizzella (1), E. Dalla Bonta` (1), E. M. Corsini (1), F. Bertola (1) ((1) Padua University, Italy, L. Coccato (2), M. Sarzi (3), The Netherlands, UK)","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2006-10-20T15:28:22Z","title":"Upper limits on the mass of supermassive black holes from HST/STIS archival data"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0610624","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":"sha256:7c09571ebe2937e212cecb89ac122119f56b4834338fda762f2fe4240241e74d","target":"record","created_at":"2026-05-18T01:40:29Z","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":"cb3332e95c242348759a2d1269d0f753aa8f0d1ec6d3e0b55add03b2144c7e8c","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2006-10-20T15:28:22Z","title_canon_sha256":"b848b5baac639a2e8276eda3db8502a8c07a7df26d1c7d35037a8c7e9285e89d"},"schema_version":"1.0","source":{"id":"astro-ph/0610624","kind":"arxiv","version":1}},"canonical_sha256":"57155535835655c49666929473397a12e96807ed684757a29a5b20d519d1569a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"57155535835655c49666929473397a12e96807ed684757a29a5b20d519d1569a","first_computed_at":"2026-05-18T01:40:29.203379Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:40:29.203379Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"MFiyVx+xWtLNpqEj7KQ/Iuo3Nvkpxle45sfs9nWNieVWB0UX/44JkjmxaXs1wf55ooLj5tHHG5PIhWJ5M4KtBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:40:29.203858Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0610624","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7c09571ebe2937e212cecb89ac122119f56b4834338fda762f2fe4240241e74d","sha256:efec6d268047026828895713ca07c925c67eb0e02b4889701c44b5131d4f25d1"],"state_sha256":"19276d726171975b29333a6bfe1341012dcc2ddbdc20d3fe469cc6bda0099698"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"u++DNbMOYGG9mhjo6AQS1IOlNbfBaekb8np+qEJ5hCHprzcif415YgK3ft1id2FpeiqHvtGWeclZBknQt5K+BQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-20T10:19:34.844468Z","bundle_sha256":"b8aba23662ee2f6116e24788ca37a09bab6b7e8ca7a46d364723c1440fa5b04b"}}