{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:66DETLUPGIBPYCJTWG4EKALMJZ","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":"9faeb32507b37483a49e7548247db81a8e7a51fb7b94114ddd631e4dd7da998d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-01-04T07:49:05Z","title_canon_sha256":"6e275265612bceca5164cec0b8ec1323a922cd7b72e828b067411c5196a22260"},"schema_version":"1.0","source":{"id":"1701.00922","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1701.00922","created_at":"2026-05-18T00:50:45Z"},{"alias_kind":"arxiv_version","alias_value":"1701.00922v1","created_at":"2026-05-18T00:50:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1701.00922","created_at":"2026-05-18T00:50:45Z"},{"alias_kind":"pith_short_12","alias_value":"66DETLUPGIBP","created_at":"2026-05-18T12:31:03Z"},{"alias_kind":"pith_short_16","alias_value":"66DETLUPGIBPYCJT","created_at":"2026-05-18T12:31:03Z"},{"alias_kind":"pith_short_8","alias_value":"66DETLUP","created_at":"2026-05-18T12:31:03Z"}],"graph_snapshots":[{"event_id":"sha256:71d87788df2e069b0947605221b1f78fc120a5807ceb672d22177c29b61bac46","target":"graph","created_at":"2026-05-18T00:50:45Z","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":"Classification of stars, by comparing their optical spectra to a few dozen spectral standards, has been a workhorse of observational astronomy for more than a century. Here, we extend this technique by compiling a library of optical spectra of 404 touchstone stars observed with Keck/HIRES by the California Planet Search. The spectra are high-resolution (R~60000), high signal-to-noise (SNR~150/pixel), and registered onto a common wavelength scale. The library stars have properties derived from interferometry, asteroseismology, LTE spectral synthesis, and spectrophotometry. To address a lack of ","authors_text":"Erik A. Petigura, Kaspar von Braun, Samuel W. Yee","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-01-04T07:49:05Z","title":"Precision Stellar Characterization of FGKM Stars using an Empirical Spectral Library"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1701.00922","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":"sha256:7f042a4e31187658751fc78925c005c909b060d38f42922d1922e565dd8440ac","target":"record","created_at":"2026-05-18T00:50:45Z","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":"9faeb32507b37483a49e7548247db81a8e7a51fb7b94114ddd631e4dd7da998d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-01-04T07:49:05Z","title_canon_sha256":"6e275265612bceca5164cec0b8ec1323a922cd7b72e828b067411c5196a22260"},"schema_version":"1.0","source":{"id":"1701.00922","kind":"arxiv","version":1}},"canonical_sha256":"f78649ae8f3202fc0933b1b845016c4e72f80ff76030b8ea9447ebcbbe1d71d2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f78649ae8f3202fc0933b1b845016c4e72f80ff76030b8ea9447ebcbbe1d71d2","first_computed_at":"2026-05-18T00:50:45.993941Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:50:45.993941Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"xVlJGUH6pIIw3C9jBJ6D9ofSoojUX5WSHwO1yuBa6Nz6K/jcx7ByPJv0LAeBaGbddbJ1X87xNYr2gldtrT0NDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:50:45.994438Z","signed_message":"canonical_sha256_bytes"},"source_id":"1701.00922","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7f042a4e31187658751fc78925c005c909b060d38f42922d1922e565dd8440ac","sha256:71d87788df2e069b0947605221b1f78fc120a5807ceb672d22177c29b61bac46"],"state_sha256":"5b3c714aa2523ab2d02e4010971f6ac1a62d8d4e74a4cf77a4345378e064e081"}