{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:ZXT6WHQDEY5JSZA22MQOXDJFC7","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":"ab523eca5af60a5325c98e72645781392904ca87ff10a3d2ab250fd5b6e28601","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-10-16T16:07:08Z","title_canon_sha256":"dc9b88c92c4f5832e0dee591eb4b2ac67069ff2602becb1e0ec9f45bf7f5164b"},"schema_version":"1.0","source":{"id":"1810.07105","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1810.07105","created_at":"2026-05-17T23:58:37Z"},{"alias_kind":"arxiv_version","alias_value":"1810.07105v1","created_at":"2026-05-17T23:58:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1810.07105","created_at":"2026-05-17T23:58:37Z"},{"alias_kind":"pith_short_12","alias_value":"ZXT6WHQDEY5J","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_16","alias_value":"ZXT6WHQDEY5JSZA2","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_8","alias_value":"ZXT6WHQD","created_at":"2026-05-18T12:33:07Z"}],"graph_snapshots":[{"event_id":"sha256:3593b17239e01338360f01bdb3eeb988018c62d76d4c986bc0426d5eb51a7c2d","target":"graph","created_at":"2026-05-17T23:58:37Z","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":"S stars are transition objects between M-type giants and carbon stars on the asymptotic giant branch (AGB). They are characterized by overabundances of s-process elements. Roughly half of them are enhanced in technetium (Tc), an s-process element with no stable isotope, while the other half lack technetium. This dichotomy arises from the fact that Tc-rich S stars are intrinsically producing s-process elements and have undergone third dredge-up (TDU) events, while Tc-poor S stars owe their s-process overabundances to a past pollution by a former AGB companion. Our aim is to analyse the abundanc","authors_text":"Alain Jorissen, Ana Escorza, Bertrand Plez, Drisya Karinkuzhi, Hans Van Winckel, Lionel Siess, Shreeya Shetye, Sophie Van Eck, Stephane Goriely","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-10-16T16:07:08Z","title":"S stars and s-process in the Gaia era I. Stellar parameters and chemical abundances in a sub-sample of S stars with new MARCS model atmospheres"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1810.07105","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":"sha256:1b0c74752f816aaa24557d7d47968de96892ebeebd963adb6e51c82692dafe1d","target":"record","created_at":"2026-05-17T23:58:37Z","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":"ab523eca5af60a5325c98e72645781392904ca87ff10a3d2ab250fd5b6e28601","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-10-16T16:07:08Z","title_canon_sha256":"dc9b88c92c4f5832e0dee591eb4b2ac67069ff2602becb1e0ec9f45bf7f5164b"},"schema_version":"1.0","source":{"id":"1810.07105","kind":"arxiv","version":1}},"canonical_sha256":"cde7eb1e03263a99641ad320eb8d2517dfbddb3a95f441486c02e81b325732d0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cde7eb1e03263a99641ad320eb8d2517dfbddb3a95f441486c02e81b325732d0","first_computed_at":"2026-05-17T23:58:37.135208Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:58:37.135208Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"IdswexsrR/g18Ttwh0bmfUZ0mDTyB7xIw5TetLgJg5kj0bJUgKlOSFOSyZ/5H+3viQOQtLtL63PFgL+2+UTiDg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:58:37.135906Z","signed_message":"canonical_sha256_bytes"},"source_id":"1810.07105","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1b0c74752f816aaa24557d7d47968de96892ebeebd963adb6e51c82692dafe1d","sha256:3593b17239e01338360f01bdb3eeb988018c62d76d4c986bc0426d5eb51a7c2d"],"state_sha256":"f7c8f4f1963291df868d0d848160027ac306e75c6655f79298e3ebb4d20f0186"}