{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2011:SOWXYISLWFVSS6BF2CG7TMZPA4","short_pith_number":"pith:SOWXYISL","schema_version":"1.0","canonical_sha256":"93ad7c224bb16b297825d08df9b32f07266b8e3eb12a871f124864c33bff267f","source":{"kind":"arxiv","id":"1102.0001","version":2},"attestation_state":"computed","paper":{"title":"The Ubiquity and Dual Nature of Ultra Compact Dwarfs","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Mark A. Norris, Sheila J. Kannappan","submitted_at":"2011-01-31T21:00:02Z","abstract_excerpt":"We present the discovery of several Ultra Compact Dwarfs (UCDs) located in field/group environments. Examination of these objects, plus literature objects, confirms the existence of two distinct formation channels for UCDs. We find that the UCDs we have discovered around the group elliptical NGC3923 (and UCDs generally) have properties consistent with their being the most luminous members of the host galaxy's globular cluster (GC) system. We describe UCDs of this type as giant GCs (GGCs). In contrast, the UCD we have found associated with the isolated S0 NGC4546 is clearly the result of the st"},"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":"1102.0001","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-01-31T21:00:02Z","cross_cats_sorted":[],"title_canon_sha256":"6ccec121c33b44474b4f98aef9290c2f315e58e2d48fd8056c0e5c41939a55dc","abstract_canon_sha256":"bf761058fa8bfa3ec2d7c86b2e81bb7114797b26ea98f9161e18f23c3b397a84"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:03:19.857046Z","signature_b64":"5FiqIEoWrvQBLZHZ5QtGsIw4okA0KUYjPkfPRv+xHxIdBCeSjQvOBWT4lj8TMaw5kQccFT3QTO/dwaw4MKbWCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"93ad7c224bb16b297825d08df9b32f07266b8e3eb12a871f124864c33bff267f","last_reissued_at":"2026-05-18T02:03:19.856331Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:03:19.856331Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The Ubiquity and Dual Nature of Ultra Compact Dwarfs","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Mark A. Norris, Sheila J. Kannappan","submitted_at":"2011-01-31T21:00:02Z","abstract_excerpt":"We present the discovery of several Ultra Compact Dwarfs (UCDs) located in field/group environments. Examination of these objects, plus literature objects, confirms the existence of two distinct formation channels for UCDs. We find that the UCDs we have discovered around the group elliptical NGC3923 (and UCDs generally) have properties consistent with their being the most luminous members of the host galaxy's globular cluster (GC) system. We describe UCDs of this type as giant GCs (GGCs). In contrast, the UCD we have found associated with the isolated S0 NGC4546 is clearly the result of the st"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1102.0001","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":""},"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":"1102.0001","created_at":"2026-05-18T02:03:19.856434+00:00"},{"alias_kind":"arxiv_version","alias_value":"1102.0001v2","created_at":"2026-05-18T02:03:19.856434+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1102.0001","created_at":"2026-05-18T02:03:19.856434+00:00"},{"alias_kind":"pith_short_12","alias_value":"SOWXYISLWFVS","created_at":"2026-05-18T12:26:41.206345+00:00"},{"alias_kind":"pith_short_16","alias_value":"SOWXYISLWFVSS6BF","created_at":"2026-05-18T12:26:41.206345+00:00"},{"alias_kind":"pith_short_8","alias_value":"SOWXYISL","created_at":"2026-05-18T12:26:41.206345+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/SOWXYISLWFVSS6BF2CG7TMZPA4","json":"https://pith.science/pith/SOWXYISLWFVSS6BF2CG7TMZPA4.json","graph_json":"https://pith.science/api/pith-number/SOWXYISLWFVSS6BF2CG7TMZPA4/graph.json","events_json":"https://pith.science/api/pith-number/SOWXYISLWFVSS6BF2CG7TMZPA4/events.json","paper":"https://pith.science/paper/SOWXYISL"},"agent_actions":{"view_html":"https://pith.science/pith/SOWXYISLWFVSS6BF2CG7TMZPA4","download_json":"https://pith.science/pith/SOWXYISLWFVSS6BF2CG7TMZPA4.json","view_paper":"https://pith.science/paper/SOWXYISL","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1102.0001&json=true","fetch_graph":"https://pith.science/api/pith-number/SOWXYISLWFVSS6BF2CG7TMZPA4/graph.json","fetch_events":"https://pith.science/api/pith-number/SOWXYISLWFVSS6BF2CG7TMZPA4/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/SOWXYISLWFVSS6BF2CG7TMZPA4/action/timestamp_anchor","attest_storage":"https://pith.science/pith/SOWXYISLWFVSS6BF2CG7TMZPA4/action/storage_attestation","attest_author":"https://pith.science/pith/SOWXYISLWFVSS6BF2CG7TMZPA4/action/author_attestation","sign_citation":"https://pith.science/pith/SOWXYISLWFVSS6BF2CG7TMZPA4/action/citation_signature","submit_replication":"https://pith.science/pith/SOWXYISLWFVSS6BF2CG7TMZPA4/action/replication_record"}},"created_at":"2026-05-18T02:03:19.856434+00:00","updated_at":"2026-05-18T02:03:19.856434+00:00"}