{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:PWKJEQLWGLVNE2VZ4E53PEPFQD","short_pith_number":"pith:PWKJEQLW","canonical_record":{"source":{"id":"1503.07595","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-03-26T01:43:12Z","cross_cats_sorted":[],"title_canon_sha256":"3b154167fe0ad5ac40f1ba140e32ddd3ec3c1a15448880dd5e5dffea1c0ebc30","abstract_canon_sha256":"f6b4d8f64bde2c508d0e798fcf1e2fe1edd0ac5677559db3d7345e22c1e3fa06"},"schema_version":"1.0"},"canonical_sha256":"7d9492417632ead26ab9e13bb791e580fe69843be70ccb6d5d8cde9f476d2727","source":{"kind":"arxiv","id":"1503.07595","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1503.07595","created_at":"2026-05-18T01:40:49Z"},{"alias_kind":"arxiv_version","alias_value":"1503.07595v1","created_at":"2026-05-18T01:40:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.07595","created_at":"2026-05-18T01:40:49Z"},{"alias_kind":"pith_short_12","alias_value":"PWKJEQLWGLVN","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_16","alias_value":"PWKJEQLWGLVNE2VZ","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_8","alias_value":"PWKJEQLW","created_at":"2026-05-18T12:29:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:PWKJEQLWGLVNE2VZ4E53PEPFQD","target":"record","payload":{"canonical_record":{"source":{"id":"1503.07595","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-03-26T01:43:12Z","cross_cats_sorted":[],"title_canon_sha256":"3b154167fe0ad5ac40f1ba140e32ddd3ec3c1a15448880dd5e5dffea1c0ebc30","abstract_canon_sha256":"f6b4d8f64bde2c508d0e798fcf1e2fe1edd0ac5677559db3d7345e22c1e3fa06"},"schema_version":"1.0"},"canonical_sha256":"7d9492417632ead26ab9e13bb791e580fe69843be70ccb6d5d8cde9f476d2727","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:40:49.822482Z","signature_b64":"qcqxA3o1VoKZ9y213m0ei9CGM7Q3Lgrsxlqa4LLr6V8fnjKsgTPrmsW0fT0Td2UFteHjcgHNG/nz/o33u26eDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7d9492417632ead26ab9e13bb791e580fe69843be70ccb6d5d8cde9f476d2727","last_reissued_at":"2026-05-18T01:40:49.821838Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:40:49.821838Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1503.07595","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:40:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"b+JacyXC0pHqYnWDIYAG3I5s5ebu7S33S+/ZLtlNKHxNK9jpNG2OiApmg68Rwv+fV2q+jU8NGSjGajDcX6lCAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T09:48:31.998773Z"},"content_sha256":"a00edf26bafc3bb7494e40bf5515c7fc6d4b5aa0baf8d5aacab1ed3facb59090","schema_version":"1.0","event_id":"sha256:a00edf26bafc3bb7494e40bf5515c7fc6d4b5aa0baf8d5aacab1ed3facb59090"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:PWKJEQLWGLVNE2VZ4E53PEPFQD","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Spectroscopic study of red giants in the Kepler field with asteroseismologically established evolutionary status and stellar parameters","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Akito Tajitsu, Yoichi Takeda","submitted_at":"2015-03-26T01:43:12Z","abstract_excerpt":"Thanks to the recent very high-precision photometry of red giants from satellites such as Kepler, precise mass and radius values as well as accurate information of evolutionary stages are already established by asteroseismic approach for a large number of G-K giants. Based on the high-dispersion spectra of selected such 55 red giants in the Kepler field with precisely known seismic parameters (among which parallaxes are available for 9 stars), we checked the accuracy of the determination method of stellar parameters previously applied to many red giants by Takeda et al. (2008, PASJ, 60, 781), "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.07595","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:40:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"y3JsO4xAdhbS1NCrQ9GQZgtUpukv6wtUZ+EogEZbXWr3PcwUGImvoU9fYSrvDxWPgLHouA5KCYzhJVMdUcF/CA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T09:48:31.999128Z"},"content_sha256":"a9a1f4e6b19cf6ebec162dafdcbe9c45ecc4dc6563c050f8ab5bae5d44a3fd44","schema_version":"1.0","event_id":"sha256:a9a1f4e6b19cf6ebec162dafdcbe9c45ecc4dc6563c050f8ab5bae5d44a3fd44"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PWKJEQLWGLVNE2VZ4E53PEPFQD/bundle.json","state_url":"https://pith.science/pith/PWKJEQLWGLVNE2VZ4E53PEPFQD/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PWKJEQLWGLVNE2VZ4E53PEPFQD/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-30T09:48:32Z","links":{"resolver":"https://pith.science/pith/PWKJEQLWGLVNE2VZ4E53PEPFQD","bundle":"https://pith.science/pith/PWKJEQLWGLVNE2VZ4E53PEPFQD/bundle.json","state":"https://pith.science/pith/PWKJEQLWGLVNE2VZ4E53PEPFQD/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PWKJEQLWGLVNE2VZ4E53PEPFQD/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:PWKJEQLWGLVNE2VZ4E53PEPFQD","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":"f6b4d8f64bde2c508d0e798fcf1e2fe1edd0ac5677559db3d7345e22c1e3fa06","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-03-26T01:43:12Z","title_canon_sha256":"3b154167fe0ad5ac40f1ba140e32ddd3ec3c1a15448880dd5e5dffea1c0ebc30"},"schema_version":"1.0","source":{"id":"1503.07595","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1503.07595","created_at":"2026-05-18T01:40:49Z"},{"alias_kind":"arxiv_version","alias_value":"1503.07595v1","created_at":"2026-05-18T01:40:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.07595","created_at":"2026-05-18T01:40:49Z"},{"alias_kind":"pith_short_12","alias_value":"PWKJEQLWGLVN","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_16","alias_value":"PWKJEQLWGLVNE2VZ","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_8","alias_value":"PWKJEQLW","created_at":"2026-05-18T12:29:37Z"}],"graph_snapshots":[{"event_id":"sha256:a9a1f4e6b19cf6ebec162dafdcbe9c45ecc4dc6563c050f8ab5bae5d44a3fd44","target":"graph","created_at":"2026-05-18T01:40:49Z","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":"Thanks to the recent very high-precision photometry of red giants from satellites such as Kepler, precise mass and radius values as well as accurate information of evolutionary stages are already established by asteroseismic approach for a large number of G-K giants. Based on the high-dispersion spectra of selected such 55 red giants in the Kepler field with precisely known seismic parameters (among which parallaxes are available for 9 stars), we checked the accuracy of the determination method of stellar parameters previously applied to many red giants by Takeda et al. (2008, PASJ, 60, 781), ","authors_text":"Akito Tajitsu, Yoichi Takeda","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-03-26T01:43:12Z","title":"Spectroscopic study of red giants in the Kepler field with asteroseismologically established evolutionary status and stellar parameters"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.07595","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:a00edf26bafc3bb7494e40bf5515c7fc6d4b5aa0baf8d5aacab1ed3facb59090","target":"record","created_at":"2026-05-18T01:40:49Z","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":"f6b4d8f64bde2c508d0e798fcf1e2fe1edd0ac5677559db3d7345e22c1e3fa06","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-03-26T01:43:12Z","title_canon_sha256":"3b154167fe0ad5ac40f1ba140e32ddd3ec3c1a15448880dd5e5dffea1c0ebc30"},"schema_version":"1.0","source":{"id":"1503.07595","kind":"arxiv","version":1}},"canonical_sha256":"7d9492417632ead26ab9e13bb791e580fe69843be70ccb6d5d8cde9f476d2727","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7d9492417632ead26ab9e13bb791e580fe69843be70ccb6d5d8cde9f476d2727","first_computed_at":"2026-05-18T01:40:49.821838Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:40:49.821838Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qcqxA3o1VoKZ9y213m0ei9CGM7Q3Lgrsxlqa4LLr6V8fnjKsgTPrmsW0fT0Td2UFteHjcgHNG/nz/o33u26eDg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:40:49.822482Z","signed_message":"canonical_sha256_bytes"},"source_id":"1503.07595","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a00edf26bafc3bb7494e40bf5515c7fc6d4b5aa0baf8d5aacab1ed3facb59090","sha256:a9a1f4e6b19cf6ebec162dafdcbe9c45ecc4dc6563c050f8ab5bae5d44a3fd44"],"state_sha256":"ca5cb12b3cb5cc2f70470e24af50dae159250bfc89e51a5e5ac4475991d2c826"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4EUeFKQfJ+3Ezj94NY2eX0AOwmqZm4ixyA5ENE2hMtoMGiYixj+4PBaiiopPpToI9+R+RDSyu4F13e5tN6S4BA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T09:48:32.001136Z","bundle_sha256":"67a0918157f327db0cdde7d24a03a62fe0a353b64b067764c42d2250522f094b"}}