{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:F7TCO2I5QBBXJFQHY6II3LOH3V","short_pith_number":"pith:F7TCO2I5","canonical_record":{"source":{"id":"1308.0252","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-08-01T15:54:15Z","cross_cats_sorted":[],"title_canon_sha256":"cdfde2c0c7adf81a438402d1d2eb10d8093e3424227e6b7acfaf02d999aec089","abstract_canon_sha256":"ba42fc7d9da3ac0ece3b4fdeaea1ef008d3e016141be2ac4a9cfcbb9086ba919"},"schema_version":"1.0"},"canonical_sha256":"2fe627691d8043749607c7908dadc7dd523c785d3cb2ae249a7b825264330827","source":{"kind":"arxiv","id":"1308.0252","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1308.0252","created_at":"2026-05-18T03:16:59Z"},{"alias_kind":"arxiv_version","alias_value":"1308.0252v1","created_at":"2026-05-18T03:16:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1308.0252","created_at":"2026-05-18T03:16:59Z"},{"alias_kind":"pith_short_12","alias_value":"F7TCO2I5QBBX","created_at":"2026-05-18T12:27:45Z"},{"alias_kind":"pith_short_16","alias_value":"F7TCO2I5QBBXJFQH","created_at":"2026-05-18T12:27:45Z"},{"alias_kind":"pith_short_8","alias_value":"F7TCO2I5","created_at":"2026-05-18T12:27:45Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:F7TCO2I5QBBXJFQHY6II3LOH3V","target":"record","payload":{"canonical_record":{"source":{"id":"1308.0252","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-08-01T15:54:15Z","cross_cats_sorted":[],"title_canon_sha256":"cdfde2c0c7adf81a438402d1d2eb10d8093e3424227e6b7acfaf02d999aec089","abstract_canon_sha256":"ba42fc7d9da3ac0ece3b4fdeaea1ef008d3e016141be2ac4a9cfcbb9086ba919"},"schema_version":"1.0"},"canonical_sha256":"2fe627691d8043749607c7908dadc7dd523c785d3cb2ae249a7b825264330827","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:16:59.468939Z","signature_b64":"Q9NUIEFwivML3lOmrukxal274DCUmAFsrKWxMuJLLkaigbxYFUXb2cTkKkaYCWN1Hp8RO2A5Rqg9mD53e2AuBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2fe627691d8043749607c7908dadc7dd523c785d3cb2ae249a7b825264330827","last_reissued_at":"2026-05-18T03:16:59.468342Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:16:59.468342Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1308.0252","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":"2026-05-18T03:16:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8p7OS/ETkZIDJedn2142JdWRqR7/Wr9pIqc+sLOeXaRKDcGt+T8tODgaBt35bmvDvgj2jkchPURLIMyxwWjYDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T04:44:16.898241Z"},"content_sha256":"b0989e132c5054f2f0f8989ca2d6bf1373cea6ab5e61061f66f4e03c81051da8","schema_version":"1.0","event_id":"sha256:b0989e132c5054f2f0f8989ca2d6bf1373cea6ab5e61061f66f4e03c81051da8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:F7TCO2I5QBBXJFQHY6II3LOH3V","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Synthetic spectra for O and B type subdwarf stars","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Ivan Hubeny, Peter Nemeth, Pier-Emmanuel Tremblay, Roy {\\O}stensen","submitted_at":"2013-08-01T15:54:15Z","abstract_excerpt":"We present a grid of optical (3200--7200 \\AA) synthetic spectra calculated with Tlusty/Synspec. The new NLTE model atmospheres include the most recent hydrogen Stark broadening profiles; were calculated in opacity sampling and limited to pure H/He composition. The grid covers the observed parameter space of (He-)sdB and (He-)sdO stars, therefore it is suitable for the homogeneous spectral analyses of such evolved stars."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1308.0252","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":"2026-05-18T03:16:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hPF/0ncOeNbPxictx6hjVVUtuoFSMY0ca18RgVEGH4uXPJyFjs8ZKyniJDuSl/fKLlx8F30BU5YFtWVmK/aKDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T04:44:16.899001Z"},"content_sha256":"913a910735b7195eca64ca23670959b3ad3fed09302ba94d1e3f82f0679f1e87","schema_version":"1.0","event_id":"sha256:913a910735b7195eca64ca23670959b3ad3fed09302ba94d1e3f82f0679f1e87"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/F7TCO2I5QBBXJFQHY6II3LOH3V/bundle.json","state_url":"https://pith.science/pith/F7TCO2I5QBBXJFQHY6II3LOH3V/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/F7TCO2I5QBBXJFQHY6II3LOH3V/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":"2026-06-01T04:44:16Z","links":{"resolver":"https://pith.science/pith/F7TCO2I5QBBXJFQHY6II3LOH3V","bundle":"https://pith.science/pith/F7TCO2I5QBBXJFQHY6II3LOH3V/bundle.json","state":"https://pith.science/pith/F7TCO2I5QBBXJFQHY6II3LOH3V/state.json","well_known_bundle":"https://pith.science/.well-known/pith/F7TCO2I5QBBXJFQHY6II3LOH3V/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:F7TCO2I5QBBXJFQHY6II3LOH3V","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":"ba42fc7d9da3ac0ece3b4fdeaea1ef008d3e016141be2ac4a9cfcbb9086ba919","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-08-01T15:54:15Z","title_canon_sha256":"cdfde2c0c7adf81a438402d1d2eb10d8093e3424227e6b7acfaf02d999aec089"},"schema_version":"1.0","source":{"id":"1308.0252","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1308.0252","created_at":"2026-05-18T03:16:59Z"},{"alias_kind":"arxiv_version","alias_value":"1308.0252v1","created_at":"2026-05-18T03:16:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1308.0252","created_at":"2026-05-18T03:16:59Z"},{"alias_kind":"pith_short_12","alias_value":"F7TCO2I5QBBX","created_at":"2026-05-18T12:27:45Z"},{"alias_kind":"pith_short_16","alias_value":"F7TCO2I5QBBXJFQH","created_at":"2026-05-18T12:27:45Z"},{"alias_kind":"pith_short_8","alias_value":"F7TCO2I5","created_at":"2026-05-18T12:27:45Z"}],"graph_snapshots":[{"event_id":"sha256:913a910735b7195eca64ca23670959b3ad3fed09302ba94d1e3f82f0679f1e87","target":"graph","created_at":"2026-05-18T03:16:59Z","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 grid of optical (3200--7200 \\AA) synthetic spectra calculated with Tlusty/Synspec. The new NLTE model atmospheres include the most recent hydrogen Stark broadening profiles; were calculated in opacity sampling and limited to pure H/He composition. The grid covers the observed parameter space of (He-)sdB and (He-)sdO stars, therefore it is suitable for the homogeneous spectral analyses of such evolved stars.","authors_text":"Ivan Hubeny, Peter Nemeth, Pier-Emmanuel Tremblay, Roy {\\O}stensen","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-08-01T15:54:15Z","title":"Synthetic spectra for O and B type subdwarf stars"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1308.0252","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:b0989e132c5054f2f0f8989ca2d6bf1373cea6ab5e61061f66f4e03c81051da8","target":"record","created_at":"2026-05-18T03:16:59Z","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":"ba42fc7d9da3ac0ece3b4fdeaea1ef008d3e016141be2ac4a9cfcbb9086ba919","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-08-01T15:54:15Z","title_canon_sha256":"cdfde2c0c7adf81a438402d1d2eb10d8093e3424227e6b7acfaf02d999aec089"},"schema_version":"1.0","source":{"id":"1308.0252","kind":"arxiv","version":1}},"canonical_sha256":"2fe627691d8043749607c7908dadc7dd523c785d3cb2ae249a7b825264330827","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2fe627691d8043749607c7908dadc7dd523c785d3cb2ae249a7b825264330827","first_computed_at":"2026-05-18T03:16:59.468342Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:16:59.468342Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Q9NUIEFwivML3lOmrukxal274DCUmAFsrKWxMuJLLkaigbxYFUXb2cTkKkaYCWN1Hp8RO2A5Rqg9mD53e2AuBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:16:59.468939Z","signed_message":"canonical_sha256_bytes"},"source_id":"1308.0252","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b0989e132c5054f2f0f8989ca2d6bf1373cea6ab5e61061f66f4e03c81051da8","sha256:913a910735b7195eca64ca23670959b3ad3fed09302ba94d1e3f82f0679f1e87"],"state_sha256":"87da488c81a010a440fd9c95c7e1b69098a16369fe81fa468a68ec9b6a34b4da"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+dlBH/KZYQPQORjoKTj2x2HhtzmqEnZV1t59a/76ClFSyHsFPDf1H+gGrOoCDHfaVdLQTp+AqplOsD/D44J0Cg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T04:44:16.902703Z","bundle_sha256":"d8f522f9a9ee9dc79bd3b114c413ea360af003764d82c1163e1a927656cdd394"}}