{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2009:DJWKX77LP4M6LIENGFT27WUHOS","short_pith_number":"pith:DJWKX77L","schema_version":"1.0","canonical_sha256":"1a6cabffeb7f19e5a08d3167afda87748a0773c441ebc6db702a2115de806665","source":{"kind":"arxiv","id":"0909.2864","version":1},"attestation_state":"computed","paper":{"title":"Stellar Populations in Globular Cluster Cores: Evidence for a Peculiar Trend Among Red Giant Branch Stars","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.IM"],"primary_cat":"astro-ph.SR","authors_text":"A. Sills, C. Knigge, N. Leigh","submitted_at":"2009-09-15T20:02:00Z","abstract_excerpt":"We investigate the relationship between the mass of a globular cluster core and the sizes of its various stellar populations in a sample of 56 globular clusters. The number of core red giant branch stars is found to scale sub-linearly with core mass at the 3-$\\sigma$ confidence level, whereas the relation is linear to within one standard deviation for main-sequence turn-off and sub-giant branch stars. We interpret our results as evidence for a surplus of red giant branch stars in the least massive cluster cores which is not seen for main-sequence turn-off and sub-giant branch stars. We explore"},"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":"0909.2864","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2009-09-15T20:02:00Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"93e0a4c2e4619670e23e40679e25c9907627b12169309909f5c242b726db7a1e","abstract_canon_sha256":"bbb6fd76f2021db88d3a22070b6340551b5b1ae295d4735855ce34a44b41b9e8"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:11:47.646719Z","signature_b64":"RK/pWNYEz5U0exaeJbdQdAGNREdJZnteY6b0ZaJU/AS7DZpL/tb2FK/03ugz5NEJZQAB4IDKWY83sMzEKuk/Cg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1a6cabffeb7f19e5a08d3167afda87748a0773c441ebc6db702a2115de806665","last_reissued_at":"2026-05-18T02:11:47.646075Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:11:47.646075Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Stellar Populations in Globular Cluster Cores: Evidence for a Peculiar Trend Among Red Giant Branch Stars","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.IM"],"primary_cat":"astro-ph.SR","authors_text":"A. Sills, C. Knigge, N. Leigh","submitted_at":"2009-09-15T20:02:00Z","abstract_excerpt":"We investigate the relationship between the mass of a globular cluster core and the sizes of its various stellar populations in a sample of 56 globular clusters. The number of core red giant branch stars is found to scale sub-linearly with core mass at the 3-$\\sigma$ confidence level, whereas the relation is linear to within one standard deviation for main-sequence turn-off and sub-giant branch stars. We interpret our results as evidence for a surplus of red giant branch stars in the least massive cluster cores which is not seen for main-sequence turn-off and sub-giant branch stars. We explore"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0909.2864","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":"0909.2864","created_at":"2026-05-18T02:11:47.646171+00:00"},{"alias_kind":"arxiv_version","alias_value":"0909.2864v1","created_at":"2026-05-18T02:11:47.646171+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0909.2864","created_at":"2026-05-18T02:11:47.646171+00:00"},{"alias_kind":"pith_short_12","alias_value":"DJWKX77LP4M6","created_at":"2026-05-18T12:25:59.703012+00:00"},{"alias_kind":"pith_short_16","alias_value":"DJWKX77LP4M6LIEN","created_at":"2026-05-18T12:25:59.703012+00:00"},{"alias_kind":"pith_short_8","alias_value":"DJWKX77L","created_at":"2026-05-18T12:25:59.703012+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/DJWKX77LP4M6LIENGFT27WUHOS","json":"https://pith.science/pith/DJWKX77LP4M6LIENGFT27WUHOS.json","graph_json":"https://pith.science/api/pith-number/DJWKX77LP4M6LIENGFT27WUHOS/graph.json","events_json":"https://pith.science/api/pith-number/DJWKX77LP4M6LIENGFT27WUHOS/events.json","paper":"https://pith.science/paper/DJWKX77L"},"agent_actions":{"view_html":"https://pith.science/pith/DJWKX77LP4M6LIENGFT27WUHOS","download_json":"https://pith.science/pith/DJWKX77LP4M6LIENGFT27WUHOS.json","view_paper":"https://pith.science/paper/DJWKX77L","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=0909.2864&json=true","fetch_graph":"https://pith.science/api/pith-number/DJWKX77LP4M6LIENGFT27WUHOS/graph.json","fetch_events":"https://pith.science/api/pith-number/DJWKX77LP4M6LIENGFT27WUHOS/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/DJWKX77LP4M6LIENGFT27WUHOS/action/timestamp_anchor","attest_storage":"https://pith.science/pith/DJWKX77LP4M6LIENGFT27WUHOS/action/storage_attestation","attest_author":"https://pith.science/pith/DJWKX77LP4M6LIENGFT27WUHOS/action/author_attestation","sign_citation":"https://pith.science/pith/DJWKX77LP4M6LIENGFT27WUHOS/action/citation_signature","submit_replication":"https://pith.science/pith/DJWKX77LP4M6LIENGFT27WUHOS/action/replication_record"}},"created_at":"2026-05-18T02:11:47.646171+00:00","updated_at":"2026-05-18T02:11:47.646171+00:00"}