{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:X6BY5PC4ZHUTZMIOTX3NIMCA3X","short_pith_number":"pith:X6BY5PC4","canonical_record":{"source":{"id":"1008.1601","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-08-09T22:04:08Z","cross_cats_sorted":[],"title_canon_sha256":"583b5fe7df84c654b13de6ce27b220883f9e0f176fb24984930f1fa0bfd4a549","abstract_canon_sha256":"0dcdcb433255fc0f129d9255b428550ae0d7dc12bd1cbc7260b626aa9399b7e2"},"schema_version":"1.0"},"canonical_sha256":"bf838ebc5cc9e93cb10e9df6d43040ddee85098fa1ae2f763e967d291d567646","source":{"kind":"arxiv","id":"1008.1601","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1008.1601","created_at":"2026-05-18T01:09:23Z"},{"alias_kind":"arxiv_version","alias_value":"1008.1601v1","created_at":"2026-05-18T01:09:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1008.1601","created_at":"2026-05-18T01:09:23Z"},{"alias_kind":"pith_short_12","alias_value":"X6BY5PC4ZHUT","created_at":"2026-05-18T12:26:17Z"},{"alias_kind":"pith_short_16","alias_value":"X6BY5PC4ZHUTZMIO","created_at":"2026-05-18T12:26:17Z"},{"alias_kind":"pith_short_8","alias_value":"X6BY5PC4","created_at":"2026-05-18T12:26:17Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:X6BY5PC4ZHUTZMIOTX3NIMCA3X","target":"record","payload":{"canonical_record":{"source":{"id":"1008.1601","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-08-09T22:04:08Z","cross_cats_sorted":[],"title_canon_sha256":"583b5fe7df84c654b13de6ce27b220883f9e0f176fb24984930f1fa0bfd4a549","abstract_canon_sha256":"0dcdcb433255fc0f129d9255b428550ae0d7dc12bd1cbc7260b626aa9399b7e2"},"schema_version":"1.0"},"canonical_sha256":"bf838ebc5cc9e93cb10e9df6d43040ddee85098fa1ae2f763e967d291d567646","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:09:23.684329Z","signature_b64":"qMXd2BVn8xWzLcnrMyUyoMxzv6QBq8ngOWlWNJULXy7CDkBMjxl9gkeJPgO1En/HDIAaZ8UjhTP3DkNGbaXACw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"bf838ebc5cc9e93cb10e9df6d43040ddee85098fa1ae2f763e967d291d567646","last_reissued_at":"2026-05-18T01:09:23.683923Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:09:23.683923Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1008.1601","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":"2026-05-18T01:09:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+hPb8fpgT7czqHG9bRapiiEHjDgjL1e52dGVTAmyUHWSk/OjlUa8Jmx29VymX/wJa3bx3Mw9WjBXcDght9qlDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T08:55:13.607514Z"},"content_sha256":"9de97bd9505f3405f95ef8a7b1fa4b6b60987feacb8bb9fa855a7ef9fea2b2de","schema_version":"1.0","event_id":"sha256:9de97bd9505f3405f95ef8a7b1fa4b6b60987feacb8bb9fa855a7ef9fea2b2de"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:X6BY5PC4ZHUTZMIOTX3NIMCA3X","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Abundances in the Herbig Ae star HD 101412: Abundance anomalies; Lambda Boo-Vega characteristics?","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"C. R. Cowley, I. Savanov, J. F. Gonz\\'alez, S. Hubrig","submitted_at":"2010-08-09T22:04:08Z","abstract_excerpt":"Context: Recent attention has been directed to abundance variations among very young stars.\n  Aims: To perform a detailed abundance study of the Herbig Ae star HD 101412, taking advantage of its unusually sharp spectral lines.\n  Methods: High-resolution spectra are measured for accurate wavelengths and equivalent widths. Balmer-line fits and ionization equlibria give a relation between Teff, and log(g). Abundance anomalies and uncertain reddening preclude the use of spectral type or photometry to fix Teff. Excitation temperatures are used to break the degeneracy between Teff and log(g).\n  Resu"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1008.1601","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":"2026-05-18T01:09:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gHeyBGOftS4G470n/ZuFkcZfjgJ8N9My52a5aXb/dL468CBXNcemcczxtVuztPBPpNaz94fEo3/YxaxThIRIAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T08:55:13.608266Z"},"content_sha256":"108ae4bbee293b9c5a4712b3be39291d4f042213be1f06ebe9e503a82ed42968","schema_version":"1.0","event_id":"sha256:108ae4bbee293b9c5a4712b3be39291d4f042213be1f06ebe9e503a82ed42968"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/X6BY5PC4ZHUTZMIOTX3NIMCA3X/bundle.json","state_url":"https://pith.science/pith/X6BY5PC4ZHUTZMIOTX3NIMCA3X/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/X6BY5PC4ZHUTZMIOTX3NIMCA3X/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":"2026-05-31T08:55:13Z","links":{"resolver":"https://pith.science/pith/X6BY5PC4ZHUTZMIOTX3NIMCA3X","bundle":"https://pith.science/pith/X6BY5PC4ZHUTZMIOTX3NIMCA3X/bundle.json","state":"https://pith.science/pith/X6BY5PC4ZHUTZMIOTX3NIMCA3X/state.json","well_known_bundle":"https://pith.science/.well-known/pith/X6BY5PC4ZHUTZMIOTX3NIMCA3X/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:X6BY5PC4ZHUTZMIOTX3NIMCA3X","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":"0dcdcb433255fc0f129d9255b428550ae0d7dc12bd1cbc7260b626aa9399b7e2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-08-09T22:04:08Z","title_canon_sha256":"583b5fe7df84c654b13de6ce27b220883f9e0f176fb24984930f1fa0bfd4a549"},"schema_version":"1.0","source":{"id":"1008.1601","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1008.1601","created_at":"2026-05-18T01:09:23Z"},{"alias_kind":"arxiv_version","alias_value":"1008.1601v1","created_at":"2026-05-18T01:09:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1008.1601","created_at":"2026-05-18T01:09:23Z"},{"alias_kind":"pith_short_12","alias_value":"X6BY5PC4ZHUT","created_at":"2026-05-18T12:26:17Z"},{"alias_kind":"pith_short_16","alias_value":"X6BY5PC4ZHUTZMIO","created_at":"2026-05-18T12:26:17Z"},{"alias_kind":"pith_short_8","alias_value":"X6BY5PC4","created_at":"2026-05-18T12:26:17Z"}],"graph_snapshots":[{"event_id":"sha256:108ae4bbee293b9c5a4712b3be39291d4f042213be1f06ebe9e503a82ed42968","target":"graph","created_at":"2026-05-18T01:09:23Z","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":"Context: Recent attention has been directed to abundance variations among very young stars.\n  Aims: To perform a detailed abundance study of the Herbig Ae star HD 101412, taking advantage of its unusually sharp spectral lines.\n  Methods: High-resolution spectra are measured for accurate wavelengths and equivalent widths. Balmer-line fits and ionization equlibria give a relation between Teff, and log(g). Abundance anomalies and uncertain reddening preclude the use of spectral type or photometry to fix Teff. Excitation temperatures are used to break the degeneracy between Teff and log(g).\n  Resu","authors_text":"C. R. Cowley, I. Savanov, J. F. Gonz\\'alez, S. Hubrig","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-08-09T22:04:08Z","title":"Abundances in the Herbig Ae star HD 101412: Abundance anomalies; Lambda Boo-Vega characteristics?"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1008.1601","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":"sha256:9de97bd9505f3405f95ef8a7b1fa4b6b60987feacb8bb9fa855a7ef9fea2b2de","target":"record","created_at":"2026-05-18T01:09:23Z","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":"0dcdcb433255fc0f129d9255b428550ae0d7dc12bd1cbc7260b626aa9399b7e2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-08-09T22:04:08Z","title_canon_sha256":"583b5fe7df84c654b13de6ce27b220883f9e0f176fb24984930f1fa0bfd4a549"},"schema_version":"1.0","source":{"id":"1008.1601","kind":"arxiv","version":1}},"canonical_sha256":"bf838ebc5cc9e93cb10e9df6d43040ddee85098fa1ae2f763e967d291d567646","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bf838ebc5cc9e93cb10e9df6d43040ddee85098fa1ae2f763e967d291d567646","first_computed_at":"2026-05-18T01:09:23.683923Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:09:23.683923Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qMXd2BVn8xWzLcnrMyUyoMxzv6QBq8ngOWlWNJULXy7CDkBMjxl9gkeJPgO1En/HDIAaZ8UjhTP3DkNGbaXACw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:09:23.684329Z","signed_message":"canonical_sha256_bytes"},"source_id":"1008.1601","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9de97bd9505f3405f95ef8a7b1fa4b6b60987feacb8bb9fa855a7ef9fea2b2de","sha256:108ae4bbee293b9c5a4712b3be39291d4f042213be1f06ebe9e503a82ed42968"],"state_sha256":"4213fda46b48d7f469175cf4d0d0dc114173a615dc172f743309037dc9bef029"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"G4BeyphCeIjVIcL0pdaamv2iJbBZ2tKzwGEtW/Y2c8IqKFiE8E+/vhTpxpy9hcTqx5KPSKpAKAm97KWT3OtrCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T08:55:13.612401Z","bundle_sha256":"1d32f0eed2bfe7025a579198ea12eccfbabf8ad15c39b5e1758f31384eed44ff"}}