{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2007:N25VJHLJOTGYV2SGPYAM4WJWRF","short_pith_number":"pith:N25VJHLJ","canonical_record":{"source":{"id":"astro-ph/0703216","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2007-03-09T19:08:02Z","cross_cats_sorted":[],"title_canon_sha256":"54b4e8c69045a33889858d0dd89c62490dd4dc0c3eaa1a3305500e075edd26af","abstract_canon_sha256":"9d17bcb60b66077aa48ff6cc9ad5478ef42de299686f6c3be343abf7fab922ab"},"schema_version":"1.0"},"canonical_sha256":"6ebb549d6974cd8aea467e00ce59368967148a4d78ea156021bbfa6129cb8c02","source":{"kind":"arxiv","id":"astro-ph/0703216","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0703216","created_at":"2026-05-18T01:09:21Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0703216v1","created_at":"2026-05-18T01:09:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0703216","created_at":"2026-05-18T01:09:21Z"},{"alias_kind":"pith_short_12","alias_value":"N25VJHLJOTGY","created_at":"2026-05-18T12:25:55Z"},{"alias_kind":"pith_short_16","alias_value":"N25VJHLJOTGYV2SG","created_at":"2026-05-18T12:25:55Z"},{"alias_kind":"pith_short_8","alias_value":"N25VJHLJ","created_at":"2026-05-18T12:25:55Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2007:N25VJHLJOTGYV2SGPYAM4WJWRF","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0703216","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2007-03-09T19:08:02Z","cross_cats_sorted":[],"title_canon_sha256":"54b4e8c69045a33889858d0dd89c62490dd4dc0c3eaa1a3305500e075edd26af","abstract_canon_sha256":"9d17bcb60b66077aa48ff6cc9ad5478ef42de299686f6c3be343abf7fab922ab"},"schema_version":"1.0"},"canonical_sha256":"6ebb549d6974cd8aea467e00ce59368967148a4d78ea156021bbfa6129cb8c02","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:09:21.636922Z","signature_b64":"IOSqUqTiinDuTSqWrVt8DglV3hop7gq7fwQnyxcvA/1OD1MGuTEhRNBJ8IzUlqN+AXH08GvpokMQXBg9nbUUBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6ebb549d6974cd8aea467e00ce59368967148a4d78ea156021bbfa6129cb8c02","last_reissued_at":"2026-05-18T01:09:21.636476Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:09:21.636476Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0703216","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":"2026-05-18T01:09:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fMsUzC1JOn/MYQ9LjaLyT/TRfSfgKIr13GYO1HSYZGypsSuDcM/2PqUP9FUq77n+ybcB3jWOGTX0HDAJojdTAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T07:26:41.560961Z"},"content_sha256":"e50899938b10adac276498a3ef56bba0d3d9a237b22eeb93486b74d72704f4a8","schema_version":"1.0","event_id":"sha256:e50899938b10adac276498a3ef56bba0d3d9a237b22eeb93486b74d72704f4a8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2007:N25VJHLJOTGYV2SGPYAM4WJWRF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Fourier method in the determination of rotational velocities in OB stars","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A. Herrero, S. Sim\\'on-D\\'iaz","submitted_at":"2007-03-09T19:08:02Z","abstract_excerpt":"We present a comprehensive study that applies the Fourier transform to a sample of O and early B-type stars (either dwarfs, giants, or supergiants) to determine their projected rotational velocities, compare with previous values obtained with other methods, and seek for evidence of extra broadening in the spectral lines\n  The Fourier technique, extensively used in the study of cooler stars, has remained only marginally applied for the case of early-type stars. The comparison of \\vsini values obtained through the \\ft and \\fwhm methods shows that the \\fwhm technique must be used with care in the"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0703216","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":"2026-05-18T01:09:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tDqW0Wt7D/qMlzsuXGzcDBB/9HL+IkM1Uw7oCbtUzkOGzOX9NNRZznZU1ijyXqW4s05AaHAI+3Kqi9DflFxwAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T07:26:41.561530Z"},"content_sha256":"207db3ea846bcacbe91a84bdc3daa4f11213ce5e90d70d5e824ebc9207fa1051","schema_version":"1.0","event_id":"sha256:207db3ea846bcacbe91a84bdc3daa4f11213ce5e90d70d5e824ebc9207fa1051"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/N25VJHLJOTGYV2SGPYAM4WJWRF/bundle.json","state_url":"https://pith.science/pith/N25VJHLJOTGYV2SGPYAM4WJWRF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/N25VJHLJOTGYV2SGPYAM4WJWRF/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":"2026-06-05T07:26:41Z","links":{"resolver":"https://pith.science/pith/N25VJHLJOTGYV2SGPYAM4WJWRF","bundle":"https://pith.science/pith/N25VJHLJOTGYV2SGPYAM4WJWRF/bundle.json","state":"https://pith.science/pith/N25VJHLJOTGYV2SGPYAM4WJWRF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/N25VJHLJOTGYV2SGPYAM4WJWRF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2007:N25VJHLJOTGYV2SGPYAM4WJWRF","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":"9d17bcb60b66077aa48ff6cc9ad5478ef42de299686f6c3be343abf7fab922ab","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2007-03-09T19:08:02Z","title_canon_sha256":"54b4e8c69045a33889858d0dd89c62490dd4dc0c3eaa1a3305500e075edd26af"},"schema_version":"1.0","source":{"id":"astro-ph/0703216","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0703216","created_at":"2026-05-18T01:09:21Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0703216v1","created_at":"2026-05-18T01:09:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0703216","created_at":"2026-05-18T01:09:21Z"},{"alias_kind":"pith_short_12","alias_value":"N25VJHLJOTGY","created_at":"2026-05-18T12:25:55Z"},{"alias_kind":"pith_short_16","alias_value":"N25VJHLJOTGYV2SG","created_at":"2026-05-18T12:25:55Z"},{"alias_kind":"pith_short_8","alias_value":"N25VJHLJ","created_at":"2026-05-18T12:25:55Z"}],"graph_snapshots":[{"event_id":"sha256:207db3ea846bcacbe91a84bdc3daa4f11213ce5e90d70d5e824ebc9207fa1051","target":"graph","created_at":"2026-05-18T01:09:21Z","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 a comprehensive study that applies the Fourier transform to a sample of O and early B-type stars (either dwarfs, giants, or supergiants) to determine their projected rotational velocities, compare with previous values obtained with other methods, and seek for evidence of extra broadening in the spectral lines\n  The Fourier technique, extensively used in the study of cooler stars, has remained only marginally applied for the case of early-type stars. The comparison of \\vsini values obtained through the \\ft and \\fwhm methods shows that the \\fwhm technique must be used with care in the","authors_text":"A. Herrero, S. Sim\\'on-D\\'iaz","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2007-03-09T19:08:02Z","title":"Fourier method in the determination of rotational velocities in OB stars"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0703216","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:e50899938b10adac276498a3ef56bba0d3d9a237b22eeb93486b74d72704f4a8","target":"record","created_at":"2026-05-18T01:09:21Z","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":"9d17bcb60b66077aa48ff6cc9ad5478ef42de299686f6c3be343abf7fab922ab","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2007-03-09T19:08:02Z","title_canon_sha256":"54b4e8c69045a33889858d0dd89c62490dd4dc0c3eaa1a3305500e075edd26af"},"schema_version":"1.0","source":{"id":"astro-ph/0703216","kind":"arxiv","version":1}},"canonical_sha256":"6ebb549d6974cd8aea467e00ce59368967148a4d78ea156021bbfa6129cb8c02","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6ebb549d6974cd8aea467e00ce59368967148a4d78ea156021bbfa6129cb8c02","first_computed_at":"2026-05-18T01:09:21.636476Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:09:21.636476Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"IOSqUqTiinDuTSqWrVt8DglV3hop7gq7fwQnyxcvA/1OD1MGuTEhRNBJ8IzUlqN+AXH08GvpokMQXBg9nbUUBw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:09:21.636922Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0703216","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e50899938b10adac276498a3ef56bba0d3d9a237b22eeb93486b74d72704f4a8","sha256:207db3ea846bcacbe91a84bdc3daa4f11213ce5e90d70d5e824ebc9207fa1051"],"state_sha256":"84016e838a76665db33ab1a7846121829ebeae26c2e682233088cab620fe6f2d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5shQc+DhKCh/nrJ7bT3Kfk6ZHcI9aaniVbeemZpbO+ypQzkYD5scr6B63+iM0oxZAarN91uPLPMIXJVK6h1WCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T07:26:41.564710Z","bundle_sha256":"264dfdc3541001e80c5b263aea7f1e38a1e6d97f45098c5677a81eafb25dbafe"}}