{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:FXWXZXPKBVIUCDBIMZDA7KYA7C","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":"29f9e45e0b33a2455e5e5e78ba864bda41d83292dce16f2756fc9c7fa4537a2f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-02-28T11:49:27Z","title_canon_sha256":"d46eeeedcc31df6bc30e4b60a00c2bfc04a1578d9ef0a820bdf62ccfc61c0eae"},"schema_version":"1.0","source":{"id":"1602.08704","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1602.08704","created_at":"2026-05-18T01:19:24Z"},{"alias_kind":"arxiv_version","alias_value":"1602.08704v1","created_at":"2026-05-18T01:19:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1602.08704","created_at":"2026-05-18T01:19:24Z"},{"alias_kind":"pith_short_12","alias_value":"FXWXZXPKBVIU","created_at":"2026-05-18T12:30:15Z"},{"alias_kind":"pith_short_16","alias_value":"FXWXZXPKBVIUCDBI","created_at":"2026-05-18T12:30:15Z"},{"alias_kind":"pith_short_8","alias_value":"FXWXZXPK","created_at":"2026-05-18T12:30:15Z"}],"graph_snapshots":[{"event_id":"sha256:f09997c0ddee2ca64502f0baa98553634cb07d0ad62a75c4edc7d1d896112a23","target":"graph","created_at":"2026-05-18T01:19:24Z","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 aim at deriving accurate atmospheric parameters and chemical abundances of 19 barium (Ba) stars, including both strong and mild Ba stars, based on the high signal-to-noise ratio and high resolution Echelle spectra obtained from the 2.16 m telescope at Xinglong station of National Astronomical Observatories, Chinese Academy of Sciences. The chemical abundances of the sample stars were obtained from an LTE, plane-parallel and line-blanketed atmospheric model by inputting the atmospheric parameters (effective temperatures, surface gravities, metallicity and microturbulent velocity) and equival","authors_text":"B. Zhang, C. X. Zhang, F. Spite, G. C. Yang, G. Q. Liu, G. Zhao, L. C. Deng, M. Spite, N. Liu, V. Hill, Y. C. Liang, Y. J. Liu, Y. Q. Chen","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-02-28T11:49:27Z","title":"Chemical abundance analysis of 19 barium stars"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1602.08704","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:c8f2ee68b0033789bbb91ead6bf250ae4ad69ee0ab710e27472640a1bc9b00ec","target":"record","created_at":"2026-05-18T01:19:24Z","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":"29f9e45e0b33a2455e5e5e78ba864bda41d83292dce16f2756fc9c7fa4537a2f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-02-28T11:49:27Z","title_canon_sha256":"d46eeeedcc31df6bc30e4b60a00c2bfc04a1578d9ef0a820bdf62ccfc61c0eae"},"schema_version":"1.0","source":{"id":"1602.08704","kind":"arxiv","version":1}},"canonical_sha256":"2ded7cddea0d51410c2866460fab00f88c592feb823cc3c1398f956a8a429679","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2ded7cddea0d51410c2866460fab00f88c592feb823cc3c1398f956a8a429679","first_computed_at":"2026-05-18T01:19:24.022873Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:19:24.022873Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"dvH/JK5ek1hxJrXfCjOJ4tf5xRH1hqyWhX5hvhJV5FhXwTkVGSV3bBfvXhEtPmFoAEp3kONpc53ZjuM+S1KzDw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:19:24.023386Z","signed_message":"canonical_sha256_bytes"},"source_id":"1602.08704","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c8f2ee68b0033789bbb91ead6bf250ae4ad69ee0ab710e27472640a1bc9b00ec","sha256:f09997c0ddee2ca64502f0baa98553634cb07d0ad62a75c4edc7d1d896112a23"],"state_sha256":"5f004b0e4df27302a716072747cbb6c62087be59314a7f35f7e19b0682297be9"}