{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:5WFYTHG5ODYXBW7XVG67AH3UEN","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":"2ad993351db857a4191c2e4a929e51823e95a89cb45c5627de718e8bd634d991","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-10-15T01:16:39Z","title_canon_sha256":"62c66bd1bb69a4a01c2b9192074dc33a1a00e1821d9de603a28eb91f1ece0841"},"schema_version":"1.0","source":{"id":"1310.3890","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1310.3890","created_at":"2026-05-18T01:47:05Z"},{"alias_kind":"arxiv_version","alias_value":"1310.3890v2","created_at":"2026-05-18T01:47:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1310.3890","created_at":"2026-05-18T01:47:05Z"},{"alias_kind":"pith_short_12","alias_value":"5WFYTHG5ODYX","created_at":"2026-05-18T12:27:34Z"},{"alias_kind":"pith_short_16","alias_value":"5WFYTHG5ODYXBW7X","created_at":"2026-05-18T12:27:34Z"},{"alias_kind":"pith_short_8","alias_value":"5WFYTHG5","created_at":"2026-05-18T12:27:34Z"}],"graph_snapshots":[{"event_id":"sha256:da030b9f56c7973d5f57e94988eae8e1fe268e024b91381b6caa5c97bc5542ed","target":"graph","created_at":"2026-05-18T01:47:05Z","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 present an analysis of the correlation between the mid-UV Mg II h and k emission lines and measured rotational periods of G-type stars. Based on IUE and HST high resolution spectra of a sample of 36 stars, we derive an exponential function that best represents the correlation. We found that the variation of the Mg II h + k fluxes is about a factor of 2.5 larger than that of Ca II H+K, indicating that the UV features are more sensitive to the decline of rotational period. The comparison of UV-predicted rotational periods with those derived from empirical Prot - Ca II H+K flux calibrations ar","authors_text":"Emanuele Bertone, Manuel Olmedo, Miguel Ch\\'avez, V\\'ictor De la Luz","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-10-15T01:16:39Z","title":"Mg II h+k Flux - Rotational Period Correlation for G-type stars"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1310.3890","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":"sha256:76c94dcf69a3dcf2e29b15d7a8a25d9434b3d95ae2b2931030c7e8b1b81b7d73","target":"record","created_at":"2026-05-18T01:47:05Z","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":"2ad993351db857a4191c2e4a929e51823e95a89cb45c5627de718e8bd634d991","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-10-15T01:16:39Z","title_canon_sha256":"62c66bd1bb69a4a01c2b9192074dc33a1a00e1821d9de603a28eb91f1ece0841"},"schema_version":"1.0","source":{"id":"1310.3890","kind":"arxiv","version":2}},"canonical_sha256":"ed8b899cdd70f170dbf7a9bdf01f74237507df0486aa89901af55da22b677e02","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ed8b899cdd70f170dbf7a9bdf01f74237507df0486aa89901af55da22b677e02","first_computed_at":"2026-05-18T01:47:05.516033Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:47:05.516033Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"p9pbEy1TDqfhaAu8h8444DtnlTH3m5GUYox3curuLCa5WcC74MmaH9SrcdOzzJzqf0et+BnPjoJAcT2HNFIfAg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:47:05.516727Z","signed_message":"canonical_sha256_bytes"},"source_id":"1310.3890","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:76c94dcf69a3dcf2e29b15d7a8a25d9434b3d95ae2b2931030c7e8b1b81b7d73","sha256:da030b9f56c7973d5f57e94988eae8e1fe268e024b91381b6caa5c97bc5542ed"],"state_sha256":"07e04643517dca46387034a6f3fb0c0069a3f8b3323d0045c31afdc9b7f50487"}