{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:YXRKGYJQFHKP7O2WOCOUMSU3VR","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":"f3f7ed6893563692b34d9c8e20f8dc9735d18d102e10244b3052b2ca37509597","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-10-23T11:59:04Z","title_canon_sha256":"36eba4a1c800f3933d68c26fbfe517d5f4da2b27a6a79bc9ce0ffb579505f9a4"},"schema_version":"1.0","source":{"id":"1210.6211","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1210.6211","created_at":"2026-05-18T01:53:44Z"},{"alias_kind":"arxiv_version","alias_value":"1210.6211v1","created_at":"2026-05-18T01:53:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1210.6211","created_at":"2026-05-18T01:53:44Z"},{"alias_kind":"pith_short_12","alias_value":"YXRKGYJQFHKP","created_at":"2026-05-18T12:27:30Z"},{"alias_kind":"pith_short_16","alias_value":"YXRKGYJQFHKP7O2W","created_at":"2026-05-18T12:27:30Z"},{"alias_kind":"pith_short_8","alias_value":"YXRKGYJQ","created_at":"2026-05-18T12:27:30Z"}],"graph_snapshots":[{"event_id":"sha256:05c3e70d3b1ff702490b9c8303796964f7bfd1f384f52f1e57797b54ada21176","target":"graph","created_at":"2026-05-18T01:53:44Z","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 derived the barium atmospheric abundances for a large sample of Cepheids, comprising 270 stars. The sample covers a large range of galactocentric distances, from about 4 to 15 kpc, so that it is appropriated to investigate the existence of radial barium abundance gradients in the galactic disc. In fact, this is the first time that such a comprehensive analysis of the distribution of barium abundances in the galactic disc is carried out. As a result, we conclude that the Ba abundance distribution can be characterized by a zero gradient. This result is compared with derived gradients for othe","authors_text":"J.R.D. Lepine, R.E. Luck, S.A. Korotin, S.M. Andrievsky, V.V. Kovtyukh, W.J. Maciel","cross_cats":["astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-10-23T11:59:04Z","title":"Barium Abundances in Cepheids"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1210.6211","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":"sha256:2fa53822869c3c6ed51330ef03f44b99902cd64e9e7f9d43a283b47eae93fb88","target":"record","created_at":"2026-05-18T01:53:44Z","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":"f3f7ed6893563692b34d9c8e20f8dc9735d18d102e10244b3052b2ca37509597","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-10-23T11:59:04Z","title_canon_sha256":"36eba4a1c800f3933d68c26fbfe517d5f4da2b27a6a79bc9ce0ffb579505f9a4"},"schema_version":"1.0","source":{"id":"1210.6211","kind":"arxiv","version":1}},"canonical_sha256":"c5e2a3613029d4ffbb56709d464a9bac734ea63e9fb05238ffddd13a6f26892e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c5e2a3613029d4ffbb56709d464a9bac734ea63e9fb05238ffddd13a6f26892e","first_computed_at":"2026-05-18T01:53:44.369196Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:53:44.369196Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"kpOBy7E26598hH/CZP1FczhZ7huh1b6K+bsy6dBw2miNK87T/d203BYafdN//scHUQUStykozGQb1Qg/444KBA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:53:44.369809Z","signed_message":"canonical_sha256_bytes"},"source_id":"1210.6211","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2fa53822869c3c6ed51330ef03f44b99902cd64e9e7f9d43a283b47eae93fb88","sha256:05c3e70d3b1ff702490b9c8303796964f7bfd1f384f52f1e57797b54ada21176"],"state_sha256":"bc1838d5509efae19b9d491c1cbf599352eed847eb3baa5f9f6c422bef318596"}