{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:62FGDEA2OPI2WV34G5LD5MNSNP","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":"b11bd2b4b84e637255c27d3e80d2ef96f877a448d7685ff7557ab21b10c174ce","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2024-12-09T07:54:12Z","title_canon_sha256":"9d388e97743904f5028ef9067bc3ccd14e3f1eb93e92faa9821f956d77599ede"},"schema_version":"1.0","source":{"id":"2412.06277","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2412.06277","created_at":"2026-07-05T10:19:32Z"},{"alias_kind":"arxiv_version","alias_value":"2412.06277v2","created_at":"2026-07-05T10:19:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2412.06277","created_at":"2026-07-05T10:19:32Z"},{"alias_kind":"pith_short_12","alias_value":"62FGDEA2OPI2","created_at":"2026-07-05T10:19:32Z"},{"alias_kind":"pith_short_16","alias_value":"62FGDEA2OPI2WV34","created_at":"2026-07-05T10:19:32Z"},{"alias_kind":"pith_short_8","alias_value":"62FGDEA2","created_at":"2026-07-05T10:19:32Z"}],"graph_snapshots":[{"event_id":"sha256:43dfac5222041ccc317d970ce7fd4f8460f3bebf62a3fdcf500a462dd1cce4e4","target":"graph","created_at":"2026-07-05T10:19:32Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2412.06277/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Accurate measurements of europium abundances in cool stars are essential for an enhanced understanding of the r-process mechanisms. We measure the abundance of Eu in solar spectra and a sample of metal-poor stars in the Galactic halo and metal-poor disk, with the metallicities ranging from \\GG{$-2.4$} to $-0.5$ dex, using non-local thermodynamic equilibrium (NLTE) line formation. We compare these measurements with Galactic Chemical Evolution (GCE) models to \\GG{explore the impact of the NLTE corrections on the contribution of r-process site in Galactic chemical evolution. In this work, we use ","authors_text":"Jeffrey Gerber, Jianhui Lian, Maria Bergemann, Nicholas Storm, Rana Ezzeddine, Sofya Alexeeva, Xuefei Chen, Yangyang Li, Yanjun Guo","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2024-12-09T07:54:12Z","title":"NLTE abundances of Eu for a sample of metal-poor stars in the Galactic Halo and Metal-poor Disk with 1D and <3D> models"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2412.06277","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:e1c0c43588f9ebc9952afac76f2e88d88592e67327032e6711da29fb7438a505","target":"record","created_at":"2026-07-05T10:19:32Z","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":"b11bd2b4b84e637255c27d3e80d2ef96f877a448d7685ff7557ab21b10c174ce","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2024-12-09T07:54:12Z","title_canon_sha256":"9d388e97743904f5028ef9067bc3ccd14e3f1eb93e92faa9821f956d77599ede"},"schema_version":"1.0","source":{"id":"2412.06277","kind":"arxiv","version":2}},"canonical_sha256":"f68a61901a73d1ab577c37563eb1b26bdc5137e1e9544a620add54bd8ffb7346","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f68a61901a73d1ab577c37563eb1b26bdc5137e1e9544a620add54bd8ffb7346","first_computed_at":"2026-07-05T10:19:32.083982Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:19:32.083982Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"RrNZZLJtmHt3O/HdrmPeutbsgL9191b83RYBcFCHsKMP+N130reaXaPWdKOROzjlBDaEIcXkHGWoGde7ho3oBg==","signature_status":"signed_v1","signed_at":"2026-07-05T10:19:32.084476Z","signed_message":"canonical_sha256_bytes"},"source_id":"2412.06277","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e1c0c43588f9ebc9952afac76f2e88d88592e67327032e6711da29fb7438a505","sha256:43dfac5222041ccc317d970ce7fd4f8460f3bebf62a3fdcf500a462dd1cce4e4"],"state_sha256":"3d1b74460bdcbe9149a93fd72b2ae43739ea17f4fe78c86f9adcd787f0c90fda"}