{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:7PKWWA23WBXMHDHPKZUYDES7YI","short_pith_number":"pith:7PKWWA23","canonical_record":{"source":{"id":"1402.3393","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-02-14T07:56:54Z","cross_cats_sorted":[],"title_canon_sha256":"059f0009744df304fb13849951d5437102dfa6734c7aa1a20c482a5568b185be","abstract_canon_sha256":"44d0a650f3aa8c09bd39878f1ce0cd39192f715d2d78ef9241c61e0b63005284"},"schema_version":"1.0"},"canonical_sha256":"fbd56b035bb06ec38cef566981925fc2259c9884f54a5fab4ead24772132da36","source":{"kind":"arxiv","id":"1402.3393","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1402.3393","created_at":"2026-05-18T01:44:38Z"},{"alias_kind":"arxiv_version","alias_value":"1402.3393v1","created_at":"2026-05-18T01:44:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1402.3393","created_at":"2026-05-18T01:44:38Z"},{"alias_kind":"pith_short_12","alias_value":"7PKWWA23WBXM","created_at":"2026-05-18T12:28:19Z"},{"alias_kind":"pith_short_16","alias_value":"7PKWWA23WBXMHDHP","created_at":"2026-05-18T12:28:19Z"},{"alias_kind":"pith_short_8","alias_value":"7PKWWA23","created_at":"2026-05-18T12:28:19Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:7PKWWA23WBXMHDHPKZUYDES7YI","target":"record","payload":{"canonical_record":{"source":{"id":"1402.3393","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-02-14T07:56:54Z","cross_cats_sorted":[],"title_canon_sha256":"059f0009744df304fb13849951d5437102dfa6734c7aa1a20c482a5568b185be","abstract_canon_sha256":"44d0a650f3aa8c09bd39878f1ce0cd39192f715d2d78ef9241c61e0b63005284"},"schema_version":"1.0"},"canonical_sha256":"fbd56b035bb06ec38cef566981925fc2259c9884f54a5fab4ead24772132da36","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:44:38.183720Z","signature_b64":"xDbzg8ddt9h/j0eLH0a268Om/a+skSMtb3LaNJKbaBXA4kc2OCrj5ndsmaSR5BPt109exkSe4u8TAVyCWF4PDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fbd56b035bb06ec38cef566981925fc2259c9884f54a5fab4ead24772132da36","last_reissued_at":"2026-05-18T01:44:38.183229Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:44:38.183229Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1402.3393","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":"2026-05-18T01:44:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dOFGbRNEXAlabxi/vmcgQNzeJHeDl6glpq8RN9G6e+8xq4aHsemjmGm2x09JBR4Ct8jvQt5p7A+GoZUMZhWiCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T01:34:54.668388Z"},"content_sha256":"a189c6f23ca2bafbe30ea7fed866521550fac081a8c78e1e97b8c43840338012","schema_version":"1.0","event_id":"sha256:a189c6f23ca2bafbe30ea7fed866521550fac081a8c78e1e97b8c43840338012"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:7PKWWA23WBXMHDHPKZUYDES7YI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"An Interacting O+O Supergiant Close Binary System: Cygnus OB2-5 (V729 Cyg)","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"B. Yasarsoy, K. Yakut","submitted_at":"2014-02-14T07:56:54Z","abstract_excerpt":"The massive interacting close binary system V729 Cyg (OIa+O/WN9), plausibly progenitor of a Wolf-Rayet system, is studied using new observations gathered over 65 nights and earlier published data. Radial velocity and five colour light curves are analysed simultaneously. Estimated physical parameters of the components are $M_1 = 36\\pm 3 M_{\\odot}$, $M_2 = 10 \\pm 1 M_{\\odot}$, $R_1 = 27\\pm 1 R_{\\odot}$, $R_2 = 15 \\pm 0.6 R_{\\odot}$, $\\log{(L_1/L_{\\odot})} = 5.59\\pm 0.06$, and $\\log{(L_2/L_{\\odot})} = 4.65\\pm 0.07$. We give only the formal 1$\\sigma$ scatter, but we believe systematic errors in th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1402.3393","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":"2026-05-18T01:44:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tHppZniDRrBisIiyE+jwg6X8F6xYv950ZTjyb8xlaYyNaRuPu2BbiTJoAtjJQ3USbrbcinOP3CJ4niNDTOiWDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T01:34:54.668737Z"},"content_sha256":"9d228897b06e4876accae74979288cbad5b3d15557b42cf2bcb792e025385b55","schema_version":"1.0","event_id":"sha256:9d228897b06e4876accae74979288cbad5b3d15557b42cf2bcb792e025385b55"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7PKWWA23WBXMHDHPKZUYDES7YI/bundle.json","state_url":"https://pith.science/pith/7PKWWA23WBXMHDHPKZUYDES7YI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7PKWWA23WBXMHDHPKZUYDES7YI/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":"2026-05-28T01:34:54Z","links":{"resolver":"https://pith.science/pith/7PKWWA23WBXMHDHPKZUYDES7YI","bundle":"https://pith.science/pith/7PKWWA23WBXMHDHPKZUYDES7YI/bundle.json","state":"https://pith.science/pith/7PKWWA23WBXMHDHPKZUYDES7YI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7PKWWA23WBXMHDHPKZUYDES7YI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:7PKWWA23WBXMHDHPKZUYDES7YI","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":"44d0a650f3aa8c09bd39878f1ce0cd39192f715d2d78ef9241c61e0b63005284","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-02-14T07:56:54Z","title_canon_sha256":"059f0009744df304fb13849951d5437102dfa6734c7aa1a20c482a5568b185be"},"schema_version":"1.0","source":{"id":"1402.3393","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1402.3393","created_at":"2026-05-18T01:44:38Z"},{"alias_kind":"arxiv_version","alias_value":"1402.3393v1","created_at":"2026-05-18T01:44:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1402.3393","created_at":"2026-05-18T01:44:38Z"},{"alias_kind":"pith_short_12","alias_value":"7PKWWA23WBXM","created_at":"2026-05-18T12:28:19Z"},{"alias_kind":"pith_short_16","alias_value":"7PKWWA23WBXMHDHP","created_at":"2026-05-18T12:28:19Z"},{"alias_kind":"pith_short_8","alias_value":"7PKWWA23","created_at":"2026-05-18T12:28:19Z"}],"graph_snapshots":[{"event_id":"sha256:9d228897b06e4876accae74979288cbad5b3d15557b42cf2bcb792e025385b55","target":"graph","created_at":"2026-05-18T01:44:38Z","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":"The massive interacting close binary system V729 Cyg (OIa+O/WN9), plausibly progenitor of a Wolf-Rayet system, is studied using new observations gathered over 65 nights and earlier published data. Radial velocity and five colour light curves are analysed simultaneously. Estimated physical parameters of the components are $M_1 = 36\\pm 3 M_{\\odot}$, $M_2 = 10 \\pm 1 M_{\\odot}$, $R_1 = 27\\pm 1 R_{\\odot}$, $R_2 = 15 \\pm 0.6 R_{\\odot}$, $\\log{(L_1/L_{\\odot})} = 5.59\\pm 0.06$, and $\\log{(L_2/L_{\\odot})} = 4.65\\pm 0.07$. We give only the formal 1$\\sigma$ scatter, but we believe systematic errors in th","authors_text":"B. Yasarsoy, K. Yakut","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-02-14T07:56:54Z","title":"An Interacting O+O Supergiant Close Binary System: Cygnus OB2-5 (V729 Cyg)"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1402.3393","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:a189c6f23ca2bafbe30ea7fed866521550fac081a8c78e1e97b8c43840338012","target":"record","created_at":"2026-05-18T01:44:38Z","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":"44d0a650f3aa8c09bd39878f1ce0cd39192f715d2d78ef9241c61e0b63005284","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-02-14T07:56:54Z","title_canon_sha256":"059f0009744df304fb13849951d5437102dfa6734c7aa1a20c482a5568b185be"},"schema_version":"1.0","source":{"id":"1402.3393","kind":"arxiv","version":1}},"canonical_sha256":"fbd56b035bb06ec38cef566981925fc2259c9884f54a5fab4ead24772132da36","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fbd56b035bb06ec38cef566981925fc2259c9884f54a5fab4ead24772132da36","first_computed_at":"2026-05-18T01:44:38.183229Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:44:38.183229Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"xDbzg8ddt9h/j0eLH0a268Om/a+skSMtb3LaNJKbaBXA4kc2OCrj5ndsmaSR5BPt109exkSe4u8TAVyCWF4PDA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:44:38.183720Z","signed_message":"canonical_sha256_bytes"},"source_id":"1402.3393","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a189c6f23ca2bafbe30ea7fed866521550fac081a8c78e1e97b8c43840338012","sha256:9d228897b06e4876accae74979288cbad5b3d15557b42cf2bcb792e025385b55"],"state_sha256":"29a445187496e75bda112a680ef88d1d2b8b9e820bc140ce9c73ff55d1de91be"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"C7txVFVkVLiO9GF7Vs7K8AYQDjrkwFOEQVSCAPG5/gItztebsK/FJB1Gz/bf2iUcg4xzt4JMghscnEGViXReCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T01:34:54.670697Z","bundle_sha256":"fd5d63b6483f75a8c7bc0eaa128bb2da784852369b9ac2122877a3583d074087"}}