{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2000:VP2EX75EU2OD7JBZYA2JE5S5BU","short_pith_number":"pith:VP2EX75E","canonical_record":{"source":{"id":"astro-ph/0002488","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2000-02-25T20:55:29Z","cross_cats_sorted":[],"title_canon_sha256":"7d48b38a13647a669f60bae7b7002fce6d815da1a51602e6a938ac1eafaa5cf7","abstract_canon_sha256":"463d49b1fb4eaf6c7f6e52985f34dbf4fa6b8f0fd43b4dc2c41cbdaeb4def8d1"},"schema_version":"1.0"},"canonical_sha256":"abf44bffa4a69c3fa439c03492765d0d1b4dea330683aa83aba9853f95fef2cf","source":{"kind":"arxiv","id":"astro-ph/0002488","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0002488","created_at":"2026-07-04T14:10:12Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0002488v2","created_at":"2026-07-04T14:10:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0002488","created_at":"2026-07-04T14:10:12Z"},{"alias_kind":"pith_short_12","alias_value":"VP2EX75EU2OD","created_at":"2026-07-04T14:10:12Z"},{"alias_kind":"pith_short_16","alias_value":"VP2EX75EU2OD7JBZ","created_at":"2026-07-04T14:10:12Z"},{"alias_kind":"pith_short_8","alias_value":"VP2EX75E","created_at":"2026-07-04T14:10:12Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2000:VP2EX75EU2OD7JBZYA2JE5S5BU","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0002488","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2000-02-25T20:55:29Z","cross_cats_sorted":[],"title_canon_sha256":"7d48b38a13647a669f60bae7b7002fce6d815da1a51602e6a938ac1eafaa5cf7","abstract_canon_sha256":"463d49b1fb4eaf6c7f6e52985f34dbf4fa6b8f0fd43b4dc2c41cbdaeb4def8d1"},"schema_version":"1.0"},"canonical_sha256":"abf44bffa4a69c3fa439c03492765d0d1b4dea330683aa83aba9853f95fef2cf","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T14:10:12.814108Z","signature_b64":"AgWKMnN0PWpyQaIQ8A2ungCdysFEufaQ3Gpba3n2d7loRESy+EdFVvBxD/AYRqHtTVdFnc31svevYJL/5rYyCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"abf44bffa4a69c3fa439c03492765d0d1b4dea330683aa83aba9853f95fef2cf","last_reissued_at":"2026-07-04T14:10:12.813602Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T14:10:12.813602Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0002488","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-04T14:10:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NunxHT6ytBSHJk228xAc5KKkq5oPxrTp+jlwDIfhS2BK54KaeAWwoibC0CZHCPIW1Mzrel1mb26EAFp+TIc3Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T13:30:35.118614Z"},"content_sha256":"175834492c84ed8a257a440b3997ad3fe76e6211edbadcaa5c33e3f5e55cb69d","schema_version":"1.0","event_id":"sha256:175834492c84ed8a257a440b3997ad3fe76e6211edbadcaa5c33e3f5e55cb69d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2000:VP2EX75EU2OD7JBZYA2JE5S5BU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Fundamental parameters of Galactic luminous OB stars V. The effect of microturbulence","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A. Herrero, M. R. Villamariz","submitted_at":"2000-02-25T20:55:29Z","abstract_excerpt":"We study the effect of microturbulence in the line formation calculations of H and He lines, in the parameter range typical for O and early B stars. We are specially interested in its effect on the determination of stellar parameters: effective temperature, surface gravity and specially on the He abundance. We find that only HeI lines and HeII 4686 are sensibly affected by microturbulence, and that models with lower gravities, the ones suitable for supergiants, are more sensitive to it. We analyze five stars using microturbulence velocities of 0 and 15 km/s. The parameters obtained for 15 km/s"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0002488","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/astro-ph/0002488/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-04T14:10:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qguUYOMSEf6b+3zvkbE2M9pl+wuQf9yzoONlaVnbDb5/6oXMxy/+/xBoFvc+JdY0Jxc025F6fG6W/oWSyetWDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T13:30:35.118988Z"},"content_sha256":"71d16013c2bb86ebfb384683724eacbf1e869dc788ac16b70159bf540c35d87a","schema_version":"1.0","event_id":"sha256:71d16013c2bb86ebfb384683724eacbf1e869dc788ac16b70159bf540c35d87a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VP2EX75EU2OD7JBZYA2JE5S5BU/bundle.json","state_url":"https://pith.science/pith/VP2EX75EU2OD7JBZYA2JE5S5BU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VP2EX75EU2OD7JBZYA2JE5S5BU/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":"2026-07-07T13:30:35Z","links":{"resolver":"https://pith.science/pith/VP2EX75EU2OD7JBZYA2JE5S5BU","bundle":"https://pith.science/pith/VP2EX75EU2OD7JBZYA2JE5S5BU/bundle.json","state":"https://pith.science/pith/VP2EX75EU2OD7JBZYA2JE5S5BU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VP2EX75EU2OD7JBZYA2JE5S5BU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2000:VP2EX75EU2OD7JBZYA2JE5S5BU","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":"463d49b1fb4eaf6c7f6e52985f34dbf4fa6b8f0fd43b4dc2c41cbdaeb4def8d1","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2000-02-25T20:55:29Z","title_canon_sha256":"7d48b38a13647a669f60bae7b7002fce6d815da1a51602e6a938ac1eafaa5cf7"},"schema_version":"1.0","source":{"id":"astro-ph/0002488","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0002488","created_at":"2026-07-04T14:10:12Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0002488v2","created_at":"2026-07-04T14:10:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0002488","created_at":"2026-07-04T14:10:12Z"},{"alias_kind":"pith_short_12","alias_value":"VP2EX75EU2OD","created_at":"2026-07-04T14:10:12Z"},{"alias_kind":"pith_short_16","alias_value":"VP2EX75EU2OD7JBZ","created_at":"2026-07-04T14:10:12Z"},{"alias_kind":"pith_short_8","alias_value":"VP2EX75E","created_at":"2026-07-04T14:10:12Z"}],"graph_snapshots":[{"event_id":"sha256:71d16013c2bb86ebfb384683724eacbf1e869dc788ac16b70159bf540c35d87a","target":"graph","created_at":"2026-07-04T14:10:12Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/astro-ph/0002488/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We study the effect of microturbulence in the line formation calculations of H and He lines, in the parameter range typical for O and early B stars. We are specially interested in its effect on the determination of stellar parameters: effective temperature, surface gravity and specially on the He abundance. We find that only HeI lines and HeII 4686 are sensibly affected by microturbulence, and that models with lower gravities, the ones suitable for supergiants, are more sensitive to it. We analyze five stars using microturbulence velocities of 0 and 15 km/s. The parameters obtained for 15 km/s","authors_text":"A. Herrero, M. R. Villamariz","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2000-02-25T20:55:29Z","title":"Fundamental parameters of Galactic luminous OB stars V. The effect of microturbulence"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0002488","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":"sha256:175834492c84ed8a257a440b3997ad3fe76e6211edbadcaa5c33e3f5e55cb69d","target":"record","created_at":"2026-07-04T14:10:12Z","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":"463d49b1fb4eaf6c7f6e52985f34dbf4fa6b8f0fd43b4dc2c41cbdaeb4def8d1","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2000-02-25T20:55:29Z","title_canon_sha256":"7d48b38a13647a669f60bae7b7002fce6d815da1a51602e6a938ac1eafaa5cf7"},"schema_version":"1.0","source":{"id":"astro-ph/0002488","kind":"arxiv","version":2}},"canonical_sha256":"abf44bffa4a69c3fa439c03492765d0d1b4dea330683aa83aba9853f95fef2cf","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"abf44bffa4a69c3fa439c03492765d0d1b4dea330683aa83aba9853f95fef2cf","first_computed_at":"2026-07-04T14:10:12.813602Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T14:10:12.813602Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"AgWKMnN0PWpyQaIQ8A2ungCdysFEufaQ3Gpba3n2d7loRESy+EdFVvBxD/AYRqHtTVdFnc31svevYJL/5rYyCw==","signature_status":"signed_v1","signed_at":"2026-07-04T14:10:12.814108Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0002488","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:175834492c84ed8a257a440b3997ad3fe76e6211edbadcaa5c33e3f5e55cb69d","sha256:71d16013c2bb86ebfb384683724eacbf1e869dc788ac16b70159bf540c35d87a"],"state_sha256":"b6a7b1d126f60e9afb1ee3636c18ed81404a56aabdbac4c452ef1f9be2a70065"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0izn3jziyvzjGQmzls2HR1f1sc6SkCMOT3zoJ1LoKCxCW+CrgyOPSpYp1W8KvJeavBJ8+BE0hIhDkJpJrLWmCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T13:30:35.121026Z","bundle_sha256":"3b8f4bd011cd1f5710f59e799c91ea0ccf77f062100bf36c2185985b195ae1af"}}