{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:6PDY3WOM2ZRPXVWW3GSHM5KELU","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"3643bf1e5e376e894e20f71a2625f17051f312fb341aa9f39e6b4e1553416709","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-01-04T20:00:01Z","title_canon_sha256":"8e4c49be7aa2897fa0a370fdcfddd891de23966b3d8de115693448938cfafd39"},"schema_version":"1.0","source":{"id":"1601.00623","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1601.00623","created_at":"2026-05-18T01:19:01Z"},{"alias_kind":"arxiv_version","alias_value":"1601.00623v1","created_at":"2026-05-18T01:19:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1601.00623","created_at":"2026-05-18T01:19:01Z"},{"alias_kind":"pith_short_12","alias_value":"6PDY3WOM2ZRP","created_at":"2026-05-18T12:30:01Z"},{"alias_kind":"pith_short_16","alias_value":"6PDY3WOM2ZRPXVWW","created_at":"2026-05-18T12:30:01Z"},{"alias_kind":"pith_short_8","alias_value":"6PDY3WOM","created_at":"2026-05-18T12:30:01Z"}],"graph_snapshots":[{"event_id":"sha256:dd3e05796a9067cb79f2150871e995d4200de1d1a539023801402a217fd64601","target":"graph","created_at":"2026-05-18T01:19:01Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"The metallicity distribution function of globular clusters (GCs) in galaxies is a key to understanding galactic formation and evolution. The calcium II triplet (CaT) index has recently become a popular metal abundance indicator thanks to its sensitivity to GC metallicity. Here we revisit and assess the reliability of CaT as a metallicity indicator using our new stellar population synthesis simulations based on empirical, high-resolution fluxes. The model shows that the CaT strength of old ($>$ 10 Gyr) GCs is proportional to ${\\rm [Fe/H]}$ below $-0.5$. In the modest metal-rich regime, however,","authors_text":"Chul Chung, Sang-Yoon Lee, Suk-Jin Yoon, Young-Wook Lee","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-01-04T20:00:01Z","title":"Nonlinear Color--Metallicity Relations of Globular Clusters. VI. On Calcium II Triplet Based Metallicities of Globular Clusters in Early-type Galaxies"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1601.00623","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:e7265f39ec372a6d9095edfc61bb023b50b98c0f60768632a1dccd33a019466f","target":"record","created_at":"2026-05-18T01:19:01Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"3643bf1e5e376e894e20f71a2625f17051f312fb341aa9f39e6b4e1553416709","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-01-04T20:00:01Z","title_canon_sha256":"8e4c49be7aa2897fa0a370fdcfddd891de23966b3d8de115693448938cfafd39"},"schema_version":"1.0","source":{"id":"1601.00623","kind":"arxiv","version":1}},"canonical_sha256":"f3c78dd9ccd662fbd6d6d9a47675445d33e2b7455d147b4d171f07c32956755f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f3c78dd9ccd662fbd6d6d9a47675445d33e2b7455d147b4d171f07c32956755f","first_computed_at":"2026-05-18T01:19:01.490112Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:19:01.490112Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"H6pE1W1Tv3ppNUpaLQkmwcpXnV5oLHLkI1qqPTxRH33vHv1+7oFYeb6ygBlf3l70hKTfa7d74M7H2K6iu3uyDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:19:01.490523Z","signed_message":"canonical_sha256_bytes"},"source_id":"1601.00623","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e7265f39ec372a6d9095edfc61bb023b50b98c0f60768632a1dccd33a019466f","sha256:dd3e05796a9067cb79f2150871e995d4200de1d1a539023801402a217fd64601"],"state_sha256":"f8b008b1041902c627ae140b7044638293875ca5a9502b6358723570b83df31b"}