{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2015:QWHIL4HIIRQBHTKIMJ2746MYJJ","short_pith_number":"pith:QWHIL4HI","schema_version":"1.0","canonical_sha256":"858e85f0e8446013cd486275fe79984a598a40c15a305d1ef0b1c54844727962","source":{"kind":"arxiv","id":"1510.00766","version":1},"attestation_state":"computed","paper":{"title":"The Ca II triplet in red giant spectra: [Fe/H] determinations and the role of [Ca/Fe]","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"G. S. Da Costa","submitted_at":"2015-10-03T01:39:21Z","abstract_excerpt":"Measurements are presented and analyzed of the strength of the Ca II triplet lines in red giants in Galactic globular and open clusters, and in a sample of red giants in the LMC disk that have significantly different [Ca/Fe] abundance ratios to the Galactic objects. The Galactic objects are used to generate a calibration between Ca II triplet line strength and [Fe/H], which is then used to estimate [Fe/H]_CaT for the LMC stars. The values are then compared with the [Fe/H]_spec determinations from high dispersion spectroscopy. After allowance for a small systematic offset the two abundance dete"},"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":"1510.00766","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-10-03T01:39:21Z","cross_cats_sorted":[],"title_canon_sha256":"41558f722b08ceb235567524026e24bd8e417428a167fbf13fc8a47c6dcfb7a2","abstract_canon_sha256":"8c7a1e32c21a182705d34de70a966bca26a77dfac9ab6de192c18ce07e85b69d"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:27:22.303611Z","signature_b64":"ktLPbEfdp3j6HTZXsuGwOC7lajH8uMh0KqRy0sq3ITdAYUPxLonOim3Yxw5zHbZcBcrtDiOjLVtkYrOqZEamBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"858e85f0e8446013cd486275fe79984a598a40c15a305d1ef0b1c54844727962","last_reissued_at":"2026-05-18T01:27:22.302975Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:27:22.302975Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The Ca II triplet in red giant spectra: [Fe/H] determinations and the role of [Ca/Fe]","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"G. S. Da Costa","submitted_at":"2015-10-03T01:39:21Z","abstract_excerpt":"Measurements are presented and analyzed of the strength of the Ca II triplet lines in red giants in Galactic globular and open clusters, and in a sample of red giants in the LMC disk that have significantly different [Ca/Fe] abundance ratios to the Galactic objects. The Galactic objects are used to generate a calibration between Ca II triplet line strength and [Fe/H], which is then used to estimate [Fe/H]_CaT for the LMC stars. The values are then compared with the [Fe/H]_spec determinations from high dispersion spectroscopy. After allowance for a small systematic offset the two abundance dete"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1510.00766","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":"1510.00766","created_at":"2026-05-18T01:27:22.303067+00:00"},{"alias_kind":"arxiv_version","alias_value":"1510.00766v1","created_at":"2026-05-18T01:27:22.303067+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1510.00766","created_at":"2026-05-18T01:27:22.303067+00:00"},{"alias_kind":"pith_short_12","alias_value":"QWHIL4HIIRQB","created_at":"2026-05-18T12:29:39.896362+00:00"},{"alias_kind":"pith_short_16","alias_value":"QWHIL4HIIRQBHTKI","created_at":"2026-05-18T12:29:39.896362+00:00"},{"alias_kind":"pith_short_8","alias_value":"QWHIL4HI","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/QWHIL4HIIRQBHTKIMJ2746MYJJ","json":"https://pith.science/pith/QWHIL4HIIRQBHTKIMJ2746MYJJ.json","graph_json":"https://pith.science/api/pith-number/QWHIL4HIIRQBHTKIMJ2746MYJJ/graph.json","events_json":"https://pith.science/api/pith-number/QWHIL4HIIRQBHTKIMJ2746MYJJ/events.json","paper":"https://pith.science/paper/QWHIL4HI"},"agent_actions":{"view_html":"https://pith.science/pith/QWHIL4HIIRQBHTKIMJ2746MYJJ","download_json":"https://pith.science/pith/QWHIL4HIIRQBHTKIMJ2746MYJJ.json","view_paper":"https://pith.science/paper/QWHIL4HI","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1510.00766&json=true","fetch_graph":"https://pith.science/api/pith-number/QWHIL4HIIRQBHTKIMJ2746MYJJ/graph.json","fetch_events":"https://pith.science/api/pith-number/QWHIL4HIIRQBHTKIMJ2746MYJJ/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/QWHIL4HIIRQBHTKIMJ2746MYJJ/action/timestamp_anchor","attest_storage":"https://pith.science/pith/QWHIL4HIIRQBHTKIMJ2746MYJJ/action/storage_attestation","attest_author":"https://pith.science/pith/QWHIL4HIIRQBHTKIMJ2746MYJJ/action/author_attestation","sign_citation":"https://pith.science/pith/QWHIL4HIIRQBHTKIMJ2746MYJJ/action/citation_signature","submit_replication":"https://pith.science/pith/QWHIL4HIIRQBHTKIMJ2746MYJJ/action/replication_record"}},"created_at":"2026-05-18T01:27:22.303067+00:00","updated_at":"2026-05-18T01:27:22.303067+00:00"}