{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:N6GOJ35T74SA5HO2CNCV6ZWPHF","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":"ef928af2322d464d8b726bb875423fb3374cd0b8d30f61760edc475c14dcde53","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-03-14T18:06:45Z","title_canon_sha256":"977e426faec1f4a116da5ffd65ff189014a41f199031b65aecc448d26dc8b02f"},"schema_version":"1.0","source":{"id":"1703.04635","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1703.04635","created_at":"2026-05-18T00:46:46Z"},{"alias_kind":"arxiv_version","alias_value":"1703.04635v1","created_at":"2026-05-18T00:46:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1703.04635","created_at":"2026-05-18T00:46:46Z"},{"alias_kind":"pith_short_12","alias_value":"N6GOJ35T74SA","created_at":"2026-05-18T12:31:31Z"},{"alias_kind":"pith_short_16","alias_value":"N6GOJ35T74SA5HO2","created_at":"2026-05-18T12:31:31Z"},{"alias_kind":"pith_short_8","alias_value":"N6GOJ35T","created_at":"2026-05-18T12:31:31Z"}],"graph_snapshots":[{"event_id":"sha256:7feff041c695952db980bd7aba15a37f57822eb35e2c9ea9078b712e971977da","target":"graph","created_at":"2026-05-18T00:46:46Z","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":"This is the second of a series of papers in which we present a new solution to reconcile the prediction of single stellar population (SSP) models with the observed stellar mass-to-light ($M/L$) ratios of globular clusters (GCs) in M31 and its trend with respect to $\\mathrm{[Fe/H]}$. In the present work our focus is on the empirical relation between age and metallicity for GCs and its effect on the $M/L$ ratio. Assuming that there is an anti-correlation between the age of M31 GCs and their metallicity, we evolve dynamical SSP models of GCs to establish a relation between the $M/L$ ratio (in the","authors_text":"Akram Hasani Zonoozi, Hosein Haghi, Pavel Kroupa, Pouria Khalaj","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-03-14T18:06:45Z","title":"A Possible Solution for the $M/L-\\mathrm{[Fe/H]}$ Relation of Globular Clusters in M31. II. the Age-Metallicity Relation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1703.04635","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:da0aca7d4fec18be8f0fea92efbfdf375e1d45fbc86ca2830e5714b259b2c4ba","target":"record","created_at":"2026-05-18T00:46:46Z","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":"ef928af2322d464d8b726bb875423fb3374cd0b8d30f61760edc475c14dcde53","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-03-14T18:06:45Z","title_canon_sha256":"977e426faec1f4a116da5ffd65ff189014a41f199031b65aecc448d26dc8b02f"},"schema_version":"1.0","source":{"id":"1703.04635","kind":"arxiv","version":1}},"canonical_sha256":"6f8ce4efb3ff240e9dda13455f66cf39666433b782bbdd5e71321a9e4258fe3f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6f8ce4efb3ff240e9dda13455f66cf39666433b782bbdd5e71321a9e4258fe3f","first_computed_at":"2026-05-18T00:46:46.207309Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:46:46.207309Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"y/7tONrKmU10ltYZsEGiOonjg8TOifVgzDzRQLJ+6MV6XTqgLp4SvFiCblQW6BGei9OM+HBCKiquVb/kgc48Bw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:46:46.208034Z","signed_message":"canonical_sha256_bytes"},"source_id":"1703.04635","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:da0aca7d4fec18be8f0fea92efbfdf375e1d45fbc86ca2830e5714b259b2c4ba","sha256:7feff041c695952db980bd7aba15a37f57822eb35e2c9ea9078b712e971977da"],"state_sha256":"6dcea8566273358089e96ef8578d83cf86d57e829df1d6e7801e2c77dbba1cca"}