{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:I7IHLZN6Z3GRMO77BDELE66FDF","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":"05fbd4710fba8f62e9019f754201164c67c8b4affaa110965df186efa4ceed47","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-07-16T13:02:54Z","title_canon_sha256":"f7e9e407f63df00f98d609ff2413dda535c16084e897bddf75047d56e3d85ea0"},"schema_version":"1.0","source":{"id":"1207.3662","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1207.3662","created_at":"2026-05-18T01:56:18Z"},{"alias_kind":"arxiv_version","alias_value":"1207.3662v1","created_at":"2026-05-18T01:56:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1207.3662","created_at":"2026-05-18T01:56:18Z"},{"alias_kind":"pith_short_12","alias_value":"I7IHLZN6Z3GR","created_at":"2026-05-18T12:27:09Z"},{"alias_kind":"pith_short_16","alias_value":"I7IHLZN6Z3GRMO77","created_at":"2026-05-18T12:27:09Z"},{"alias_kind":"pith_short_8","alias_value":"I7IHLZN6","created_at":"2026-05-18T12:27:09Z"}],"graph_snapshots":[{"event_id":"sha256:8dec986f0227493de2edd447e1501074c8d524a5b0228791b3704c12301ea522","target":"graph","created_at":"2026-05-18T01:56:18Z","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":"We present a theoretical calibration of a new metallicity diagnostic based on the Stroemgren index m1 and on visual -- near-infrared (NIR) colors to estimate the global metal abundance of cluster and field dwarf stars. To perform the metallicity calibration we adopt alpha-enhanced evolutionary models transformed into the observational plane by using atmosphere models computed adopting the same chemical mixture. We apply the new visual - NIR Metallicity-Index-Color (MIC) relations to two different samples of field dwarfs and we find that the difference between photometric estimates and spectros","authors_text":"Annalisa Calamida (OAR-INAF), A. Pietrinferni (OACTe-INAF), A. P. Milone (IAC), E. P. Lagioia (Univ. Tor Vergata), G. Bono (Univ. Tor Vergata), M. Monelli","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-07-16T13:02:54Z","title":"A new visual -- near-infrared diagnostic to estimate the metallicity of cluster and field dwarf stars"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1207.3662","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":"sha256:40cf496fc305ca33724c519004c2f44a3229d8f3515fe32aaa99d3a8f1740187","target":"record","created_at":"2026-05-18T01:56:18Z","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":"05fbd4710fba8f62e9019f754201164c67c8b4affaa110965df186efa4ceed47","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-07-16T13:02:54Z","title_canon_sha256":"f7e9e407f63df00f98d609ff2413dda535c16084e897bddf75047d56e3d85ea0"},"schema_version":"1.0","source":{"id":"1207.3662","kind":"arxiv","version":1}},"canonical_sha256":"47d075e5bececd163bff08c8b27bc5195195334cf973c13ad438db214008c4e0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"47d075e5bececd163bff08c8b27bc5195195334cf973c13ad438db214008c4e0","first_computed_at":"2026-05-18T01:56:18.110862Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:56:18.110862Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ri1w//0Iw6wp1bZqXe4oSOp0uS1VAaOdchPrjZxA4vdrAHL9IRAMDiYPSZcV1mWnXX+ULYbH4Fwj2HdW8SgYCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:56:18.111464Z","signed_message":"canonical_sha256_bytes"},"source_id":"1207.3662","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:40cf496fc305ca33724c519004c2f44a3229d8f3515fe32aaa99d3a8f1740187","sha256:8dec986f0227493de2edd447e1501074c8d524a5b0228791b3704c12301ea522"],"state_sha256":"9a612dc08a516d847300a751093e182e8eedfbdd9e15da8769b564d75419b4c2"}