{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2013:AUXDW6MGXHREUCNWFF2CMS2LN2","short_pith_number":"pith:AUXDW6MG","schema_version":"1.0","canonical_sha256":"052e3b7986b9e24a09b62974264b4b6eac3791858e4c434b2ee9c619f20acae3","source":{"kind":"arxiv","id":"1305.3059","version":2},"attestation_state":"computed","paper":{"title":"Spectral matching for abundances of 848 stars of the giant branches of the globular cluster {\\omega} Centauri","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Jeffrey. D. Simpson, P. L. Cottrell","submitted_at":"2013-05-14T08:31:46Z","abstract_excerpt":"We present the effective temperatures, surface gravities and abundances of iron, carbon and barium of 848 giant branch stars, of which 557 also have well-defined nitrogen abundances, of the globular cluster {\\omega} Centauri. This work used photometric sources and lower resolution spectra for this abundance analysis. Spectral indices were used to estimate the oxygen abundance of the stars, leading to a determination of whether a particular star was oxygen-rich or oxygen-poor.\n  The 557-star subset was analyzed in the context of evolutionary groups, with four broad groups identified. These grou"},"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":"1305.3059","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-05-14T08:31:46Z","cross_cats_sorted":[],"title_canon_sha256":"22d1b83d368bdfe40ceecd09dabe25df7c5a08f84e35411a054997edb7dad59e","abstract_canon_sha256":"7bb8b2ffff2bdef04162750e99c41c50650dc22dd76ae126ed710e820057e39b"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:50:02.437359Z","signature_b64":"4Qah3AWdFImKajmx0l0qb4TADdjf78b5RrKwhD2Qvfuy8n2e9Rq5yWfx62hc3X/IqILFTetbGoNMHAJpqiALBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"052e3b7986b9e24a09b62974264b4b6eac3791858e4c434b2ee9c619f20acae3","last_reissued_at":"2026-05-18T01:50:02.436735Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:50:02.436735Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Spectral matching for abundances of 848 stars of the giant branches of the globular cluster {\\omega} Centauri","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Jeffrey. D. Simpson, P. L. Cottrell","submitted_at":"2013-05-14T08:31:46Z","abstract_excerpt":"We present the effective temperatures, surface gravities and abundances of iron, carbon and barium of 848 giant branch stars, of which 557 also have well-defined nitrogen abundances, of the globular cluster {\\omega} Centauri. This work used photometric sources and lower resolution spectra for this abundance analysis. Spectral indices were used to estimate the oxygen abundance of the stars, leading to a determination of whether a particular star was oxygen-rich or oxygen-poor.\n  The 557-star subset was analyzed in the context of evolutionary groups, with four broad groups identified. These grou"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1305.3059","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":"1305.3059","created_at":"2026-05-18T01:50:02.436824+00:00"},{"alias_kind":"arxiv_version","alias_value":"1305.3059v2","created_at":"2026-05-18T01:50:02.436824+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1305.3059","created_at":"2026-05-18T01:50:02.436824+00:00"},{"alias_kind":"pith_short_12","alias_value":"AUXDW6MGXHRE","created_at":"2026-05-18T12:27:38.830355+00:00"},{"alias_kind":"pith_short_16","alias_value":"AUXDW6MGXHREUCNW","created_at":"2026-05-18T12:27:38.830355+00:00"},{"alias_kind":"pith_short_8","alias_value":"AUXDW6MG","created_at":"2026-05-18T12:27:38.830355+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2605.23474","citing_title":"Disruption of a Giant: Spectroscopic Identification of Members in the Periphery and Tidal Tails of $\\omega$ Centauri","ref_index":42,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/AUXDW6MGXHREUCNWFF2CMS2LN2","json":"https://pith.science/pith/AUXDW6MGXHREUCNWFF2CMS2LN2.json","graph_json":"https://pith.science/api/pith-number/AUXDW6MGXHREUCNWFF2CMS2LN2/graph.json","events_json":"https://pith.science/api/pith-number/AUXDW6MGXHREUCNWFF2CMS2LN2/events.json","paper":"https://pith.science/paper/AUXDW6MG"},"agent_actions":{"view_html":"https://pith.science/pith/AUXDW6MGXHREUCNWFF2CMS2LN2","download_json":"https://pith.science/pith/AUXDW6MGXHREUCNWFF2CMS2LN2.json","view_paper":"https://pith.science/paper/AUXDW6MG","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1305.3059&json=true","fetch_graph":"https://pith.science/api/pith-number/AUXDW6MGXHREUCNWFF2CMS2LN2/graph.json","fetch_events":"https://pith.science/api/pith-number/AUXDW6MGXHREUCNWFF2CMS2LN2/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/AUXDW6MGXHREUCNWFF2CMS2LN2/action/timestamp_anchor","attest_storage":"https://pith.science/pith/AUXDW6MGXHREUCNWFF2CMS2LN2/action/storage_attestation","attest_author":"https://pith.science/pith/AUXDW6MGXHREUCNWFF2CMS2LN2/action/author_attestation","sign_citation":"https://pith.science/pith/AUXDW6MGXHREUCNWFF2CMS2LN2/action/citation_signature","submit_replication":"https://pith.science/pith/AUXDW6MGXHREUCNWFF2CMS2LN2/action/replication_record"}},"created_at":"2026-05-18T01:50:02.436824+00:00","updated_at":"2026-05-18T01:50:02.436824+00:00"}