{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:M7UBUWXKNOZIR4XZTCTMNY7BKL","short_pith_number":"pith:M7UBUWXK","canonical_record":{"source":{"id":"1006.1075","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-06-05T22:28:10Z","cross_cats_sorted":[],"title_canon_sha256":"2bc606c2f2433de3fe7864f0fd4ac1429daa30df6c05e9748a44bf9e68f3e2ea","abstract_canon_sha256":"b776500edf1999238e6b1b285bb49ac58aa57e3c3eb2cd7094cec7fb64671d71"},"schema_version":"1.0"},"canonical_sha256":"67e81a5aea6bb288f2f998a6c6e3e152f735634ac0a76d1378cd3e0cb0e915a2","source":{"kind":"arxiv","id":"1006.1075","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1006.1075","created_at":"2026-05-18T02:06:57Z"},{"alias_kind":"arxiv_version","alias_value":"1006.1075v1","created_at":"2026-05-18T02:06:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1006.1075","created_at":"2026-05-18T02:06:57Z"},{"alias_kind":"pith_short_12","alias_value":"M7UBUWXKNOZI","created_at":"2026-05-18T12:26:10Z"},{"alias_kind":"pith_short_16","alias_value":"M7UBUWXKNOZIR4XZ","created_at":"2026-05-18T12:26:10Z"},{"alias_kind":"pith_short_8","alias_value":"M7UBUWXK","created_at":"2026-05-18T12:26:10Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:M7UBUWXKNOZIR4XZTCTMNY7BKL","target":"record","payload":{"canonical_record":{"source":{"id":"1006.1075","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-06-05T22:28:10Z","cross_cats_sorted":[],"title_canon_sha256":"2bc606c2f2433de3fe7864f0fd4ac1429daa30df6c05e9748a44bf9e68f3e2ea","abstract_canon_sha256":"b776500edf1999238e6b1b285bb49ac58aa57e3c3eb2cd7094cec7fb64671d71"},"schema_version":"1.0"},"canonical_sha256":"67e81a5aea6bb288f2f998a6c6e3e152f735634ac0a76d1378cd3e0cb0e915a2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:06:57.028932Z","signature_b64":"JqVDBqKNIsqtj3/UdI4OAbmXrlVqoP6NNknOqhbxR2JgM4ELJXkLQW5R576OKvbAeuNxSZ/CTdg8R4Wft33nAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"67e81a5aea6bb288f2f998a6c6e3e152f735634ac0a76d1378cd3e0cb0e915a2","last_reissued_at":"2026-05-18T02:06:57.027669Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:06:57.027669Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1006.1075","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":"2026-05-18T02:06:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HyTvCY89uEF289/cV9x8t9shtDnqgzoQee9aMHD6PbCBuPrLgZ2FKPbzHakNV/VpJaJl3xdiDiQoWyum6lD0Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T09:42:57.773430Z"},"content_sha256":"1ed921b047432840160888f8bc5ac9bcc41177e52c73b6a93c672d7ce36fd84e","schema_version":"1.0","event_id":"sha256:1ed921b047432840160888f8bc5ac9bcc41177e52c73b6a93c672d7ce36fd84e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:M7UBUWXKNOZIR4XZTCTMNY7BKL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The orbital period of V458 Vulpeculae, a post double common-envelope nova","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"A. A. Zijlstra (Manchester), B. Miszalski (Herts), B. T. G\\\"ansicke (Warwick), C. Knigge (Southampton), CSIC-INTA), D. Jones (Manchester), D. Steeghs (Warwick), IAC, ING), J. Drew (Herts), J. J. Drake (CfA), M. J. Barlow (UCL), M. M. Rubio-D\\'iez (ING, M. Santander-Garc\\'ia (ING, P. Rodr\\'iguez-Gil (ING, R. L. M. Corradi (IAC, R. Napiwotzki (Herts), R. Wesson (UCL), S. Pyrzas (Warwick), T. Liimets (Tartu, ULL)","submitted_at":"2010-06-05T22:28:10Z","abstract_excerpt":"We present time-resolved optical spectroscopy of V458 Vulpeculae (Nova Vul 2007 No. 1) spread over a period of 15 months starting 301 days after its discovery. Our data reveal radial velocity variations in the HeII {\\lambda}5412 and HeII {\\lambda}4686 emission lines. A period analysis of the radial velocity curves resulted in a period of 98.09647 \\pm 0.00025 min (0.06812255 \\pm 0.00000017 d) which we identify with the orbital period of the binary system. V458 Vul is therefore the planetary nebula central binary star with the shortest period known. We explore the possibility of the system being"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1006.1075","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":"2026-05-18T02:06:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vovqYazc/4OESOdkc8GTIOSrqDyBN6McJSuZBqTM3VvCtckXsJTfiSfiUl7CWP7AcxGzKTunx860Q+RLaXItAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T09:42:57.774264Z"},"content_sha256":"914c9d1ca01eea37da5392f566922113e46045da543533c808283a1baaad627b","schema_version":"1.0","event_id":"sha256:914c9d1ca01eea37da5392f566922113e46045da543533c808283a1baaad627b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/M7UBUWXKNOZIR4XZTCTMNY7BKL/bundle.json","state_url":"https://pith.science/pith/M7UBUWXKNOZIR4XZTCTMNY7BKL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/M7UBUWXKNOZIR4XZTCTMNY7BKL/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":"2026-05-27T09:42:57Z","links":{"resolver":"https://pith.science/pith/M7UBUWXKNOZIR4XZTCTMNY7BKL","bundle":"https://pith.science/pith/M7UBUWXKNOZIR4XZTCTMNY7BKL/bundle.json","state":"https://pith.science/pith/M7UBUWXKNOZIR4XZTCTMNY7BKL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/M7UBUWXKNOZIR4XZTCTMNY7BKL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:M7UBUWXKNOZIR4XZTCTMNY7BKL","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":"b776500edf1999238e6b1b285bb49ac58aa57e3c3eb2cd7094cec7fb64671d71","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-06-05T22:28:10Z","title_canon_sha256":"2bc606c2f2433de3fe7864f0fd4ac1429daa30df6c05e9748a44bf9e68f3e2ea"},"schema_version":"1.0","source":{"id":"1006.1075","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1006.1075","created_at":"2026-05-18T02:06:57Z"},{"alias_kind":"arxiv_version","alias_value":"1006.1075v1","created_at":"2026-05-18T02:06:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1006.1075","created_at":"2026-05-18T02:06:57Z"},{"alias_kind":"pith_short_12","alias_value":"M7UBUWXKNOZI","created_at":"2026-05-18T12:26:10Z"},{"alias_kind":"pith_short_16","alias_value":"M7UBUWXKNOZIR4XZ","created_at":"2026-05-18T12:26:10Z"},{"alias_kind":"pith_short_8","alias_value":"M7UBUWXK","created_at":"2026-05-18T12:26:10Z"}],"graph_snapshots":[{"event_id":"sha256:914c9d1ca01eea37da5392f566922113e46045da543533c808283a1baaad627b","target":"graph","created_at":"2026-05-18T02:06:57Z","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 time-resolved optical spectroscopy of V458 Vulpeculae (Nova Vul 2007 No. 1) spread over a period of 15 months starting 301 days after its discovery. Our data reveal radial velocity variations in the HeII {\\lambda}5412 and HeII {\\lambda}4686 emission lines. A period analysis of the radial velocity curves resulted in a period of 98.09647 \\pm 0.00025 min (0.06812255 \\pm 0.00000017 d) which we identify with the orbital period of the binary system. V458 Vul is therefore the planetary nebula central binary star with the shortest period known. We explore the possibility of the system being","authors_text":"A. A. Zijlstra (Manchester), B. Miszalski (Herts), B. T. G\\\"ansicke (Warwick), C. Knigge (Southampton), CSIC-INTA), D. Jones (Manchester), D. Steeghs (Warwick), IAC, ING), J. Drew (Herts), J. J. Drake (CfA), M. J. Barlow (UCL), M. M. Rubio-D\\'iez (ING, M. Santander-Garc\\'ia (ING, P. Rodr\\'iguez-Gil (ING, R. L. M. Corradi (IAC, R. Napiwotzki (Herts), R. Wesson (UCL), S. Pyrzas (Warwick), T. Liimets (Tartu, ULL)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-06-05T22:28:10Z","title":"The orbital period of V458 Vulpeculae, a post double common-envelope nova"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1006.1075","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":"sha256:1ed921b047432840160888f8bc5ac9bcc41177e52c73b6a93c672d7ce36fd84e","target":"record","created_at":"2026-05-18T02:06:57Z","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":"b776500edf1999238e6b1b285bb49ac58aa57e3c3eb2cd7094cec7fb64671d71","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-06-05T22:28:10Z","title_canon_sha256":"2bc606c2f2433de3fe7864f0fd4ac1429daa30df6c05e9748a44bf9e68f3e2ea"},"schema_version":"1.0","source":{"id":"1006.1075","kind":"arxiv","version":1}},"canonical_sha256":"67e81a5aea6bb288f2f998a6c6e3e152f735634ac0a76d1378cd3e0cb0e915a2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"67e81a5aea6bb288f2f998a6c6e3e152f735634ac0a76d1378cd3e0cb0e915a2","first_computed_at":"2026-05-18T02:06:57.027669Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:06:57.027669Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"JqVDBqKNIsqtj3/UdI4OAbmXrlVqoP6NNknOqhbxR2JgM4ELJXkLQW5R576OKvbAeuNxSZ/CTdg8R4Wft33nAA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:06:57.028932Z","signed_message":"canonical_sha256_bytes"},"source_id":"1006.1075","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1ed921b047432840160888f8bc5ac9bcc41177e52c73b6a93c672d7ce36fd84e","sha256:914c9d1ca01eea37da5392f566922113e46045da543533c808283a1baaad627b"],"state_sha256":"757d34d73c7abac036f4576691e81afc8a530728d429a1a14dc547d9eba5a35e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+lihWI3aNhHVVXvcxaCW3yegD+E1IjkKXtexJXGKoo3sNFQlzH6Unmc+2MustUkcEQ9cfdCMhGHnZ3SpmRx3BA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T09:42:57.777526Z","bundle_sha256":"ae4f8ea3dcfaa95cb373d370d75d7ab15349722ef0ed73db5768fcbed7b15572"}}