{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:UT6L5GIEIJ6TD4E3ID2IPEGEET","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":"1917d48739683d43eb6e386ae26efb85535ddae7596979ba7f8ffb1caba7440e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2009-02-26T03:12:10Z","title_canon_sha256":"ea79acc91316b082b1ffa31d6fd46cd1980ca4ff9a8fd966b1b42e2a93d22ebf"},"schema_version":"1.0","source":{"id":"0902.4504","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0902.4504","created_at":"2026-05-18T02:14:38Z"},{"alias_kind":"arxiv_version","alias_value":"0902.4504v1","created_at":"2026-05-18T02:14:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0902.4504","created_at":"2026-05-18T02:14:38Z"},{"alias_kind":"pith_short_12","alias_value":"UT6L5GIEIJ6T","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_16","alias_value":"UT6L5GIEIJ6TD4E3","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_8","alias_value":"UT6L5GIE","created_at":"2026-05-18T12:26:02Z"}],"graph_snapshots":[{"event_id":"sha256:65764a09beb03e0b4aa30f213817163b539a17d8b6c0e9a7f0207e5cc0559655","target":"graph","created_at":"2026-05-18T02:14:38Z","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":"A non-LTE analysis of K I resonance lines at 7664.91 and 7698.97 A was carried out for 15 red giants belonging to three globular clusters of different metallicity (M 4, M 13, and M 15) along with two reference early-K giants (rho Boo and alpha Boo), in order to check whether the K abundances are uniform within a cluster and to investigate the behavior of [K/Fe] ratio at the relevant metallicity range of -2.5 <[Fe/H] < -1. We confirmed that [K/H] (as well as [Fe/H]) is almost homogeneous within each cluster to a precision of < ~0.1 dex, though dubiously large deviations are exceptionally seen f","authors_text":"H. Ito, H. Kaneko, N. Matsumoto, S. Oshino, T. Shibuya, Y. Takeda","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2009-02-26T03:12:10Z","title":"Potassium Abundances in Red Giants of Mildly to Very Metal-Poor Globular Clusters"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0902.4504","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":"sha256:5439d468af023e75937e1b2cef17f0404e7e66c3982551ca2e0ae76d5fb93d80","target":"record","created_at":"2026-05-18T02:14:38Z","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":"1917d48739683d43eb6e386ae26efb85535ddae7596979ba7f8ffb1caba7440e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2009-02-26T03:12:10Z","title_canon_sha256":"ea79acc91316b082b1ffa31d6fd46cd1980ca4ff9a8fd966b1b42e2a93d22ebf"},"schema_version":"1.0","source":{"id":"0902.4504","kind":"arxiv","version":1}},"canonical_sha256":"a4fcbe9904427d31f09b40f48790c424e0e8c07eeec0b75ab5a5975e28b0effc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a4fcbe9904427d31f09b40f48790c424e0e8c07eeec0b75ab5a5975e28b0effc","first_computed_at":"2026-05-18T02:14:38.790141Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:14:38.790141Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9mrAU9WGiQi/B6l791AlYMrIrpy5DRIx39oP32eFjzN/fFcxl62urArUdY2UR4VZVnqikANqJuM5WACo2ZibDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:14:38.790889Z","signed_message":"canonical_sha256_bytes"},"source_id":"0902.4504","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5439d468af023e75937e1b2cef17f0404e7e66c3982551ca2e0ae76d5fb93d80","sha256:65764a09beb03e0b4aa30f213817163b539a17d8b6c0e9a7f0207e5cc0559655"],"state_sha256":"f5fb99e4eb45dc1ded2f2e27518b60725b290646f6b07ae51ac5a65949a9cf00"}