{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:5JIWTE4TNQN4YZUMCBORNGIT45","short_pith_number":"pith:5JIWTE4T","canonical_record":{"source":{"id":"0903.5134","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2009-03-30T06:59:13Z","cross_cats_sorted":[],"title_canon_sha256":"5795f572c52e65d4f20cab925f0ef635735271426c92f77f3cffcff7dee0836c","abstract_canon_sha256":"aef1e3143daee0cd344929ac199870fab6dc0e48167606ab9336d73e1b4fa48c"},"schema_version":"1.0"},"canonical_sha256":"ea516993936c1bcc668c105d169913e77a149a41da04dce871e8c822941ee1f7","source":{"kind":"arxiv","id":"0903.5134","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0903.5134","created_at":"2026-05-18T01:18:48Z"},{"alias_kind":"arxiv_version","alias_value":"0903.5134v1","created_at":"2026-05-18T01:18:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0903.5134","created_at":"2026-05-18T01:18:48Z"},{"alias_kind":"pith_short_12","alias_value":"5JIWTE4TNQN4","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_16","alias_value":"5JIWTE4TNQN4YZUM","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_8","alias_value":"5JIWTE4T","created_at":"2026-05-18T12:25:58Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:5JIWTE4TNQN4YZUMCBORNGIT45","target":"record","payload":{"canonical_record":{"source":{"id":"0903.5134","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2009-03-30T06:59:13Z","cross_cats_sorted":[],"title_canon_sha256":"5795f572c52e65d4f20cab925f0ef635735271426c92f77f3cffcff7dee0836c","abstract_canon_sha256":"aef1e3143daee0cd344929ac199870fab6dc0e48167606ab9336d73e1b4fa48c"},"schema_version":"1.0"},"canonical_sha256":"ea516993936c1bcc668c105d169913e77a149a41da04dce871e8c822941ee1f7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:18:48.216301Z","signature_b64":"RDF5J/b9HiGGeS+vfM4B8J9lByDSTk53QPeV94+zWKzV8OQ+zzTP9IzJbjPvUHujI8/w3DyqcGJTxGNvRAdEAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ea516993936c1bcc668c105d169913e77a149a41da04dce871e8c822941ee1f7","last_reissued_at":"2026-05-18T01:18:48.215600Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:18:48.215600Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0903.5134","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":"2026-05-18T01:18:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"smDyQyE3jMbg5DGo1u4eLQsFmk1I/2A9RG68fgKS66B6m1fKwsang0dQ8MoI9mcSR50aRKR9Z1uqKnx/jOeEAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T18:57:52.048856Z"},"content_sha256":"27b7e4791b1828481d334e2416e4451e8e0c2a1c760534266392fff6e5e28183","schema_version":"1.0","event_id":"sha256:27b7e4791b1828481d334e2416e4451e8e0c2a1c760534266392fff6e5e28183"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:5JIWTE4TNQN4YZUMCBORNGIT45","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Fundamental parameters of B Supergiants from the BCD System","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"A. F. Torres, C. Martayan, J. Zorec, L. Cidale, M. F. Muratore, M. L. Arias, Y. Fremat","submitted_at":"2009-03-30T06:59:13Z","abstract_excerpt":"Effective temperatures of early-type supergiants are important to test stellar atmosphere- and internal structure-models of massive and intermediate mass objects at different evolutionary phases. However, these Teff values are more or less discrepant depending on the method used to determine them. We aim to obtain a new calibration of the Teff parameter for early-type supergiants as a function of observational quantities that are highly sensitive to the ionization balance in the photosphere and its gas pressure, independent of the interstellar extinction, and as much as possible model-independ"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0903.5134","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":"2026-05-18T01:18:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"v3wSZuzCPNrZexPCfbtzVZoXUhjhVrt4gp2l/aTirhGMGd9B1uzgp+UK8ACmD9OcKvOJhXbkyuS9hlLCaS0fDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T18:57:52.049507Z"},"content_sha256":"7b177e35245f6f446bf1e670b379246cc03785023bbab8fa8dda0787979cc11f","schema_version":"1.0","event_id":"sha256:7b177e35245f6f446bf1e670b379246cc03785023bbab8fa8dda0787979cc11f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/5JIWTE4TNQN4YZUMCBORNGIT45/bundle.json","state_url":"https://pith.science/pith/5JIWTE4TNQN4YZUMCBORNGIT45/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/5JIWTE4TNQN4YZUMCBORNGIT45/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":"2026-06-05T18:57:52Z","links":{"resolver":"https://pith.science/pith/5JIWTE4TNQN4YZUMCBORNGIT45","bundle":"https://pith.science/pith/5JIWTE4TNQN4YZUMCBORNGIT45/bundle.json","state":"https://pith.science/pith/5JIWTE4TNQN4YZUMCBORNGIT45/state.json","well_known_bundle":"https://pith.science/.well-known/pith/5JIWTE4TNQN4YZUMCBORNGIT45/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:5JIWTE4TNQN4YZUMCBORNGIT45","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":"aef1e3143daee0cd344929ac199870fab6dc0e48167606ab9336d73e1b4fa48c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2009-03-30T06:59:13Z","title_canon_sha256":"5795f572c52e65d4f20cab925f0ef635735271426c92f77f3cffcff7dee0836c"},"schema_version":"1.0","source":{"id":"0903.5134","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0903.5134","created_at":"2026-05-18T01:18:48Z"},{"alias_kind":"arxiv_version","alias_value":"0903.5134v1","created_at":"2026-05-18T01:18:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0903.5134","created_at":"2026-05-18T01:18:48Z"},{"alias_kind":"pith_short_12","alias_value":"5JIWTE4TNQN4","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_16","alias_value":"5JIWTE4TNQN4YZUM","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_8","alias_value":"5JIWTE4T","created_at":"2026-05-18T12:25:58Z"}],"graph_snapshots":[{"event_id":"sha256:7b177e35245f6f446bf1e670b379246cc03785023bbab8fa8dda0787979cc11f","target":"graph","created_at":"2026-05-18T01:18:48Z","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":"Effective temperatures of early-type supergiants are important to test stellar atmosphere- and internal structure-models of massive and intermediate mass objects at different evolutionary phases. However, these Teff values are more or less discrepant depending on the method used to determine them. We aim to obtain a new calibration of the Teff parameter for early-type supergiants as a function of observational quantities that are highly sensitive to the ionization balance in the photosphere and its gas pressure, independent of the interstellar extinction, and as much as possible model-independ","authors_text":"A. F. Torres, C. Martayan, J. Zorec, L. Cidale, M. F. Muratore, M. L. Arias, Y. Fremat","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2009-03-30T06:59:13Z","title":"Fundamental parameters of B Supergiants from the BCD System"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0903.5134","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":"sha256:27b7e4791b1828481d334e2416e4451e8e0c2a1c760534266392fff6e5e28183","target":"record","created_at":"2026-05-18T01:18:48Z","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":"aef1e3143daee0cd344929ac199870fab6dc0e48167606ab9336d73e1b4fa48c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2009-03-30T06:59:13Z","title_canon_sha256":"5795f572c52e65d4f20cab925f0ef635735271426c92f77f3cffcff7dee0836c"},"schema_version":"1.0","source":{"id":"0903.5134","kind":"arxiv","version":1}},"canonical_sha256":"ea516993936c1bcc668c105d169913e77a149a41da04dce871e8c822941ee1f7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ea516993936c1bcc668c105d169913e77a149a41da04dce871e8c822941ee1f7","first_computed_at":"2026-05-18T01:18:48.215600Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:18:48.215600Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"RDF5J/b9HiGGeS+vfM4B8J9lByDSTk53QPeV94+zWKzV8OQ+zzTP9IzJbjPvUHujI8/w3DyqcGJTxGNvRAdEAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:18:48.216301Z","signed_message":"canonical_sha256_bytes"},"source_id":"0903.5134","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:27b7e4791b1828481d334e2416e4451e8e0c2a1c760534266392fff6e5e28183","sha256:7b177e35245f6f446bf1e670b379246cc03785023bbab8fa8dda0787979cc11f"],"state_sha256":"bb397d4aadc3cf281f4d28e5d228b0cd32a8493e46578cea4cc415c48019c6b0"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kwvwMg5vHWFSJtTG+H1FDjqqZe3eP9sdOF4GrCgHPEYrJ0xOW7P0DkVJdX9QQlgfopVvAyARmZn7Rn6RSoNrAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T18:57:52.052630Z","bundle_sha256":"30203647ff012fa34ce441932372645cef73e34bbf5b548543a8e2df40430f7a"}}