{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:B2KD6BL7WFPE5XM5Y46MMVHWJM","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":"21f016b89961c41dc0080c1c980ea3dfcf3efa4929af6edd45e38a6bb170e1fc","cross_cats_sorted":["astro-ph.EP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-12-29T02:07:03Z","title_canon_sha256":"5f8d646c81ad3407065c602bc135becb94a9f0c914b2979fe03629079ad2d137"},"schema_version":"1.0","source":{"id":"1412.8243","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1412.8243","created_at":"2026-05-18T01:55:52Z"},{"alias_kind":"arxiv_version","alias_value":"1412.8243v2","created_at":"2026-05-18T01:55:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1412.8243","created_at":"2026-05-18T01:55:52Z"},{"alias_kind":"pith_short_12","alias_value":"B2KD6BL7WFPE","created_at":"2026-05-18T12:28:19Z"},{"alias_kind":"pith_short_16","alias_value":"B2KD6BL7WFPE5XM5","created_at":"2026-05-18T12:28:19Z"},{"alias_kind":"pith_short_8","alias_value":"B2KD6BL7","created_at":"2026-05-18T12:28:19Z"}],"graph_snapshots":[{"event_id":"sha256:7c6799a1869a73854beb648a0887dbef3b798c6d37fa32d8b0df98fd326dc92b","target":"graph","created_at":"2026-05-18T01:55:52Z","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 conducted high dispersion spectroscopic observations of 50 superflare stars with Subaru/HDS, and measured the stellar parameters of them. These 50 targets were selected from the solar-type (G-type main sequence) superflare stars that we had discovered from the Kepler photometric data. As a result of these spectroscopic observations, we found that more than half (34 stars) of our 50 targets have no evidence of binary system. We then estimated effective temperature ($T_{\\rm{eff}}$), surface gravity ($\\log g$), metallicity ([Fe/H]), and projected rotational velocity ($v\\sin i$) of these 34 sup","authors_text":"Daisaku Nogami, Hiroyuki Maehara, Kazunari Shibata, Satoshi Honda, Shota Notsu, Takuya Shibayama, Yuta Notsu","cross_cats":["astro-ph.EP"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-12-29T02:07:03Z","title":"High Dispersion Spectroscopy of Solar-type Superflare Stars. I. Temperature, Surface Gravity, Metallicity, and $v \\sin i$"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1412.8243","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:fa6101049acf21a2986cf17b9f50157f13f4df1c7afc4fa5a5a8a32f962f21ac","target":"record","created_at":"2026-05-18T01:55:52Z","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":"21f016b89961c41dc0080c1c980ea3dfcf3efa4929af6edd45e38a6bb170e1fc","cross_cats_sorted":["astro-ph.EP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-12-29T02:07:03Z","title_canon_sha256":"5f8d646c81ad3407065c602bc135becb94a9f0c914b2979fe03629079ad2d137"},"schema_version":"1.0","source":{"id":"1412.8243","kind":"arxiv","version":2}},"canonical_sha256":"0e943f057fb15e4edd9dc73cc654f64b2c7b87365f881d88d93053f7349b4f82","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0e943f057fb15e4edd9dc73cc654f64b2c7b87365f881d88d93053f7349b4f82","first_computed_at":"2026-05-18T01:55:52.822039Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:55:52.822039Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"HCnw/y3zo95UW9Z31vofr9j270CvFkUlFqa9ubDGl1FIlfDw3PDL/7Nwf1fDV4hG1iDoOJroqN41sE0YWj4KCw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:55:52.822477Z","signed_message":"canonical_sha256_bytes"},"source_id":"1412.8243","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:fa6101049acf21a2986cf17b9f50157f13f4df1c7afc4fa5a5a8a32f962f21ac","sha256:7c6799a1869a73854beb648a0887dbef3b798c6d37fa32d8b0df98fd326dc92b"],"state_sha256":"80227fac5d52bca74a7b1f431a98e6e7ac25b7950fec655920290d430e31285b"}