{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:6UPORLA2UP7EKIGGOTJO7VCAXT","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":"dc4d8aac2bb2e4f2980479198764b25039c493be77da9f3ffaad2edc640e4677","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-12-28T14:13:24Z","title_canon_sha256":"23e0d244dcd4fc591e495862029613507a23025ff03a049294f6c70caa1176c5"},"schema_version":"1.0","source":{"id":"1412.8168","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1412.8168","created_at":"2026-05-18T02:27:31Z"},{"alias_kind":"arxiv_version","alias_value":"1412.8168v2","created_at":"2026-05-18T02:27:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1412.8168","created_at":"2026-05-18T02:27:31Z"},{"alias_kind":"pith_short_12","alias_value":"6UPORLA2UP7E","created_at":"2026-05-18T12:28:16Z"},{"alias_kind":"pith_short_16","alias_value":"6UPORLA2UP7EKIGG","created_at":"2026-05-18T12:28:16Z"},{"alias_kind":"pith_short_8","alias_value":"6UPORLA2","created_at":"2026-05-18T12:28:16Z"}],"graph_snapshots":[{"event_id":"sha256:10ea366e8012a399ef7a58c30f33d6573799e6f49de03a919bdc86c4d06c23c4","target":"graph","created_at":"2026-05-18T02:27:31Z","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":"Context. Many large stellar surveys have been and are still being carried out, providing huge amounts of data, for which stellar physical parameters will be derived. Solar twins and analogues provide a means to test the calibration of these stellar catalogues because the Sun is the best-studied star and provides precise fundamental parameters. Solar twins should be centred on the solar values. Aims. This spectroscopic study of solar analogues selected from the Geneva-Copenhagen Survey (GCS) at a resolution of 48,000 provides effective temperatures and metallicities for these stars. We test whe","authors_text":"Chris Flynn, Juliet Datson, Laura Portinari","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-12-28T14:13:24Z","title":"Spectroscopic study of solar twins and analogues"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1412.8168","kind":"arxiv","version":2},"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:d2b9f80fa451337b4089a8496a1765e6c5a1776b540004e18b2b918341b80121","target":"record","created_at":"2026-05-18T02:27:31Z","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":"dc4d8aac2bb2e4f2980479198764b25039c493be77da9f3ffaad2edc640e4677","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-12-28T14:13:24Z","title_canon_sha256":"23e0d244dcd4fc591e495862029613507a23025ff03a049294f6c70caa1176c5"},"schema_version":"1.0","source":{"id":"1412.8168","kind":"arxiv","version":2}},"canonical_sha256":"f51ee8ac1aa3fe4520c674d2efd440bcd794863db72ff10e736f122663b13c63","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f51ee8ac1aa3fe4520c674d2efd440bcd794863db72ff10e736f122663b13c63","first_computed_at":"2026-05-18T02:27:31.635419Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:27:31.635419Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"PMr8Qk6OyCeomRgqrKXE/SA+YIybJYIGNIzxo0fncooTUUm0Me27VeVYHBC7icDYY0x6JKn5o1a9PU6zG8l8DA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:27:31.636164Z","signed_message":"canonical_sha256_bytes"},"source_id":"1412.8168","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d2b9f80fa451337b4089a8496a1765e6c5a1776b540004e18b2b918341b80121","sha256:10ea366e8012a399ef7a58c30f33d6573799e6f49de03a919bdc86c4d06c23c4"],"state_sha256":"cdcdc7b064e26e3d60e270ce83084eaccaf9d17321c4d1cab103774dd1d2475a"}