{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2021:PD7CAK4ITWZ2RR6X3KVWQ26KVL","short_pith_number":"pith:PD7CAK4I","schema_version":"1.0","canonical_sha256":"78fe202b889db3a8c7d7daab686bcaaad7d9f092b0eb0d5b914e47e0a65eaf32","source":{"kind":"arxiv","id":"2112.10805","version":2},"attestation_state":"computed","paper":{"title":"SDSS-IV MaNGA: Cannibalism Caught in the Act -- on the Frequency of Occurrence of Multiple Cores in Brightest Cluster Galaxies","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Alexie Leauthaud, Alfonso Arag\\'on-Salamanca, Donald P. Schneider, Dylan Nelson, Eric Emsellem, Hsuan-Ting Lai, Jenny Greene, Joel R. Brownstein, Kaike Pan, Kevin Bundy, Michael Merrifield, Nobuhiro Okabe, Richard R. Lane, Song Huang, Surhud More, Vicente Rodriguez-Gomez, Yen-Ting Lin, Yun-Hsin Hsu, Yu Rong","submitted_at":"2021-12-20T19:07:33Z","abstract_excerpt":"Although it is generally accepted that massive galaxies form in a two-phased fashion, beginning with a rapid mass buildup through intense starburst activities, followed by primarily dry mergers that mainly deposit stellar mass at outskirts, the late time stellar mass growth of brightest cluster galaxies (BCGs), the most massive galaxies in the universe, is still not well understood. Several independent measurements have indicated a slower mass growth rate than predictions from theoretical models. We attempt to resolve the discrepancy by measuring the frequency of BCGs with multiple-cores, whic"},"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":"2112.10805","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-12-20T19:07:33Z","cross_cats_sorted":[],"title_canon_sha256":"76dfe722260cf762a60a522c842992d502b9afe1ad27ef4128cbfd80ab835ad6","abstract_canon_sha256":"9ff21cab92c99f97983a81345de890547bfa7ddb26ade75adbfe6aaa734b8ce6"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T05:06:53.889551Z","signature_b64":"wR0iAYuSzF/c4xOvgYb70GdIslU00xZxnivcKsu0d9XHVKvEJOfv/nOoSfHWyTsioKu+fuQmOjjFbJOKCZ4WDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"78fe202b889db3a8c7d7daab686bcaaad7d9f092b0eb0d5b914e47e0a65eaf32","last_reissued_at":"2026-07-05T05:06:53.889068Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T05:06:53.889068Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"SDSS-IV MaNGA: Cannibalism Caught in the Act -- on the Frequency of Occurrence of Multiple Cores in Brightest Cluster Galaxies","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Alexie Leauthaud, Alfonso Arag\\'on-Salamanca, Donald P. Schneider, Dylan Nelson, Eric Emsellem, Hsuan-Ting Lai, Jenny Greene, Joel R. Brownstein, Kaike Pan, Kevin Bundy, Michael Merrifield, Nobuhiro Okabe, Richard R. Lane, Song Huang, Surhud More, Vicente Rodriguez-Gomez, Yen-Ting Lin, Yun-Hsin Hsu, Yu Rong","submitted_at":"2021-12-20T19:07:33Z","abstract_excerpt":"Although it is generally accepted that massive galaxies form in a two-phased fashion, beginning with a rapid mass buildup through intense starburst activities, followed by primarily dry mergers that mainly deposit stellar mass at outskirts, the late time stellar mass growth of brightest cluster galaxies (BCGs), the most massive galaxies in the universe, is still not well understood. Several independent measurements have indicated a slower mass growth rate than predictions from theoretical models. We attempt to resolve the discrepancy by measuring the frequency of BCGs with multiple-cores, whic"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2112.10805","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2112.10805/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2112.10805","created_at":"2026-07-05T05:06:53.889125+00:00"},{"alias_kind":"arxiv_version","alias_value":"2112.10805v2","created_at":"2026-07-05T05:06:53.889125+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2112.10805","created_at":"2026-07-05T05:06:53.889125+00:00"},{"alias_kind":"pith_short_12","alias_value":"PD7CAK4ITWZ2","created_at":"2026-07-05T05:06:53.889125+00:00"},{"alias_kind":"pith_short_16","alias_value":"PD7CAK4ITWZ2RR6X","created_at":"2026-07-05T05:06:53.889125+00:00"},{"alias_kind":"pith_short_8","alias_value":"PD7CAK4I","created_at":"2026-07-05T05:06:53.889125+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/PD7CAK4ITWZ2RR6X3KVWQ26KVL","json":"https://pith.science/pith/PD7CAK4ITWZ2RR6X3KVWQ26KVL.json","graph_json":"https://pith.science/api/pith-number/PD7CAK4ITWZ2RR6X3KVWQ26KVL/graph.json","events_json":"https://pith.science/api/pith-number/PD7CAK4ITWZ2RR6X3KVWQ26KVL/events.json","paper":"https://pith.science/paper/PD7CAK4I"},"agent_actions":{"view_html":"https://pith.science/pith/PD7CAK4ITWZ2RR6X3KVWQ26KVL","download_json":"https://pith.science/pith/PD7CAK4ITWZ2RR6X3KVWQ26KVL.json","view_paper":"https://pith.science/paper/PD7CAK4I","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2112.10805&json=true","fetch_graph":"https://pith.science/api/pith-number/PD7CAK4ITWZ2RR6X3KVWQ26KVL/graph.json","fetch_events":"https://pith.science/api/pith-number/PD7CAK4ITWZ2RR6X3KVWQ26KVL/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/PD7CAK4ITWZ2RR6X3KVWQ26KVL/action/timestamp_anchor","attest_storage":"https://pith.science/pith/PD7CAK4ITWZ2RR6X3KVWQ26KVL/action/storage_attestation","attest_author":"https://pith.science/pith/PD7CAK4ITWZ2RR6X3KVWQ26KVL/action/author_attestation","sign_citation":"https://pith.science/pith/PD7CAK4ITWZ2RR6X3KVWQ26KVL/action/citation_signature","submit_replication":"https://pith.science/pith/PD7CAK4ITWZ2RR6X3KVWQ26KVL/action/replication_record"}},"created_at":"2026-07-05T05:06:53.889125+00:00","updated_at":"2026-07-05T05:06:53.889125+00:00"}