{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2015:RBFC6YG24BYGMMRGCS27A4C63X","short_pith_number":"pith:RBFC6YG2","schema_version":"1.0","canonical_sha256":"884a2f60dae07066322614b5f0705edde09f4bdc4930ce651d83b3f1f47df56c","source":{"kind":"arxiv","id":"1501.03167","version":1},"attestation_state":"computed","paper":{"title":"The Next Generation Virgo Cluster Survey. VI. The Kinematics of Ultra-compact Dwarfs and Globular Clusters in M87","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"Alessandro Boselli, Andres Jordan, Ariane Lancon, Biao Li, Chengze Liu, Eric Emsellem, Eric W. Peng, Hong-Xin Zhang, Jean-Charles Cuillandre, John Blakeslee, Kenji Bekki, Laura Ferrarese, Michael J. Drinkwater, Nelson Caldwell, Patrick Cote, Patrick Durrell, Peter Firth, Pierre-Alain Duc, Roberto P. Munoz, Ruben Sanchez-Janssen, Stephen D. J. Gwyn, Thomas H. Puzia","submitted_at":"2015-01-13T21:00:27Z","abstract_excerpt":"The origin of ultra-compact dwarfs (UCDs)--objects larger and more massive than typical globular clusters (GCs), but more compact than typical dwarf galaxies--has been hotly debated in the 15 years since their discovery. Even whether UCDs should be considered galactic in origin, or simply the most extreme GCs, is not yet settled. We present the dynamical properties of 97 spectroscopically confirmed UCDs (rh >~10 pc) and 911 GCs associated with central cD galaxy of the Virgo cluster, M87. Our UCDs, of which 89% have M_star > ~2X10^6 M_sun and 92% are as blue as the classic blue GCs, nearly trip"},"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":"1501.03167","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-01-13T21:00:27Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"d42ee4dffa8e0d219cedca5f5336bcbcd9992e3d2bd211199a2e3b23f7362dce","abstract_canon_sha256":"a555197997c9d575d3f50cab6b78198ce0375a07489293223794b35b70863e17"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:41:11.209912Z","signature_b64":"WvLkLHfK45zjAuk3LNNNcpDSkB5BXAUkLzuByq5K/3LgBcjPjrLiHjMmp90S6Zqy4fjROuRTtPa1PSSXgr1lCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"884a2f60dae07066322614b5f0705edde09f4bdc4930ce651d83b3f1f47df56c","last_reissued_at":"2026-05-18T01:41:11.209256Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:41:11.209256Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The Next Generation Virgo Cluster Survey. VI. The Kinematics of Ultra-compact Dwarfs and Globular Clusters in M87","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"Alessandro Boselli, Andres Jordan, Ariane Lancon, Biao Li, Chengze Liu, Eric Emsellem, Eric W. Peng, Hong-Xin Zhang, Jean-Charles Cuillandre, John Blakeslee, Kenji Bekki, Laura Ferrarese, Michael J. Drinkwater, Nelson Caldwell, Patrick Cote, Patrick Durrell, Peter Firth, Pierre-Alain Duc, Roberto P. Munoz, Ruben Sanchez-Janssen, Stephen D. J. Gwyn, Thomas H. Puzia","submitted_at":"2015-01-13T21:00:27Z","abstract_excerpt":"The origin of ultra-compact dwarfs (UCDs)--objects larger and more massive than typical globular clusters (GCs), but more compact than typical dwarf galaxies--has been hotly debated in the 15 years since their discovery. Even whether UCDs should be considered galactic in origin, or simply the most extreme GCs, is not yet settled. We present the dynamical properties of 97 spectroscopically confirmed UCDs (rh >~10 pc) and 911 GCs associated with central cD galaxy of the Virgo cluster, M87. Our UCDs, of which 89% have M_star > ~2X10^6 M_sun and 92% are as blue as the classic blue GCs, nearly trip"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1501.03167","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":"1501.03167","created_at":"2026-05-18T01:41:11.209385+00:00"},{"alias_kind":"arxiv_version","alias_value":"1501.03167v1","created_at":"2026-05-18T01:41:11.209385+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1501.03167","created_at":"2026-05-18T01:41:11.209385+00:00"},{"alias_kind":"pith_short_12","alias_value":"RBFC6YG24BYG","created_at":"2026-05-18T12:29:39.896362+00:00"},{"alias_kind":"pith_short_16","alias_value":"RBFC6YG24BYGMMRG","created_at":"2026-05-18T12:29:39.896362+00:00"},{"alias_kind":"pith_short_8","alias_value":"RBFC6YG2","created_at":"2026-05-18T12:29:39.896362+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/RBFC6YG24BYGMMRGCS27A4C63X","json":"https://pith.science/pith/RBFC6YG24BYGMMRGCS27A4C63X.json","graph_json":"https://pith.science/api/pith-number/RBFC6YG24BYGMMRGCS27A4C63X/graph.json","events_json":"https://pith.science/api/pith-number/RBFC6YG24BYGMMRGCS27A4C63X/events.json","paper":"https://pith.science/paper/RBFC6YG2"},"agent_actions":{"view_html":"https://pith.science/pith/RBFC6YG24BYGMMRGCS27A4C63X","download_json":"https://pith.science/pith/RBFC6YG24BYGMMRGCS27A4C63X.json","view_paper":"https://pith.science/paper/RBFC6YG2","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1501.03167&json=true","fetch_graph":"https://pith.science/api/pith-number/RBFC6YG24BYGMMRGCS27A4C63X/graph.json","fetch_events":"https://pith.science/api/pith-number/RBFC6YG24BYGMMRGCS27A4C63X/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/RBFC6YG24BYGMMRGCS27A4C63X/action/timestamp_anchor","attest_storage":"https://pith.science/pith/RBFC6YG24BYGMMRGCS27A4C63X/action/storage_attestation","attest_author":"https://pith.science/pith/RBFC6YG24BYGMMRGCS27A4C63X/action/author_attestation","sign_citation":"https://pith.science/pith/RBFC6YG24BYGMMRGCS27A4C63X/action/citation_signature","submit_replication":"https://pith.science/pith/RBFC6YG24BYGMMRGCS27A4C63X/action/replication_record"}},"created_at":"2026-05-18T01:41:11.209385+00:00","updated_at":"2026-05-18T01:41:11.209385+00:00"}