{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:VO4NBNOGSEVKZVP5D2VFQCYPZJ","short_pith_number":"pith:VO4NBNOG","canonical_record":{"source":{"id":"1107.4986","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2011-07-25T15:57:37Z","cross_cats_sorted":[],"title_canon_sha256":"1d5abe717e9f051910ce408ec54e3372f77cef7b8d0eca68962b0c872a3eebf2","abstract_canon_sha256":"45bb6eab3d1de7da5ede790c2a657a7d21438d8afbd3dd251fedc4f17231a880"},"schema_version":"1.0"},"canonical_sha256":"abb8d0b5c6912aacd5fd1eaa580b0fca476b8b7676413a6f432d7b2b7c8c5d62","source":{"kind":"arxiv","id":"1107.4986","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1107.4986","created_at":"2026-05-18T02:01:10Z"},{"alias_kind":"arxiv_version","alias_value":"1107.4986v2","created_at":"2026-05-18T02:01:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1107.4986","created_at":"2026-05-18T02:01:10Z"},{"alias_kind":"pith_short_12","alias_value":"VO4NBNOGSEVK","created_at":"2026-05-18T12:26:44Z"},{"alias_kind":"pith_short_16","alias_value":"VO4NBNOGSEVKZVP5","created_at":"2026-05-18T12:26:44Z"},{"alias_kind":"pith_short_8","alias_value":"VO4NBNOG","created_at":"2026-05-18T12:26:44Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:VO4NBNOGSEVKZVP5D2VFQCYPZJ","target":"record","payload":{"canonical_record":{"source":{"id":"1107.4986","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2011-07-25T15:57:37Z","cross_cats_sorted":[],"title_canon_sha256":"1d5abe717e9f051910ce408ec54e3372f77cef7b8d0eca68962b0c872a3eebf2","abstract_canon_sha256":"45bb6eab3d1de7da5ede790c2a657a7d21438d8afbd3dd251fedc4f17231a880"},"schema_version":"1.0"},"canonical_sha256":"abb8d0b5c6912aacd5fd1eaa580b0fca476b8b7676413a6f432d7b2b7c8c5d62","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:01:10.424754Z","signature_b64":"/rO0ilasmJJAHU9BSwJyAYyLmoApnU7ECqRKNVufqtwYstw/FfY9knyKUa+L6mThJ5f80zNOoHkEMcUvxuTsBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"abb8d0b5c6912aacd5fd1eaa580b0fca476b8b7676413a6f432d7b2b7c8c5d62","last_reissued_at":"2026-05-18T02:01:10.424159Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:01:10.424159Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1107.4986","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:01:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vGmpLjklNHTqKNnruMs3wgcGzX+QisrOvsDW2sOYdqPr8iX2qDqLTeg3mAbHf91BSI3ZLMGAdBmz7dQz4higAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T13:50:57.412581Z"},"content_sha256":"8d23f3a3b3060fead631a68f1436d648ceab12ca85d0921c09e952a7966ba9c7","schema_version":"1.0","event_id":"sha256:8d23f3a3b3060fead631a68f1436d648ceab12ca85d0921c09e952a7966ba9c7"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:VO4NBNOGSEVKZVP5D2VFQCYPZJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Discovery of a stripped red giant core in a bright eclipsing binary system","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"A. Collier-Cameron, B. Smalley, B.T. Gaensicke, D.R. Anderson, G. Nelemans, M.R. Burleigh, P.F.L. Maxted, R.G. West, R.H. Ostensen, S. Geier, S.J. O'Toole, T. Kupfer, T.R. Marsh, U. Heber","submitted_at":"2011-07-25T15:57:37Z","abstract_excerpt":"We have identified a star in the WASP archive photometry with an unusual lightcurve due to the total eclipse of a small, hot star by an apparently normal A-type star and with an orbital period of only 0.668d. From an analysis of the WASP lightcurve together with V-band and I_C-band photometry of the eclipse and a spectroscopic orbit for the A-type star we estimate that the companion star has a mass of (0.23+-0.03)Msun and a radius of (0.33+-0.01)Rsun, assuming that the A-type star is a main-sequence star with the metalicity appropriate for a thick-disk star. The effective temperature of the co"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1107.4986","kind":"arxiv","version":2},"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":"2026-05-18T02:01:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"e7PNyuhdBqUxH/E6IM8LnrIvG28dJzzwoLezzlXhMVkIy3xT4rcTUifPSFbqVW0aO+K1CTXSPeTCzI1fM9jGAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T13:50:57.413179Z"},"content_sha256":"69854c1eba6906c937f95b55e9bcdb66658efd97f623b01163312710871212a7","schema_version":"1.0","event_id":"sha256:69854c1eba6906c937f95b55e9bcdb66658efd97f623b01163312710871212a7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VO4NBNOGSEVKZVP5D2VFQCYPZJ/bundle.json","state_url":"https://pith.science/pith/VO4NBNOGSEVKZVP5D2VFQCYPZJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VO4NBNOGSEVKZVP5D2VFQCYPZJ/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":"2026-05-27T13:50:57Z","links":{"resolver":"https://pith.science/pith/VO4NBNOGSEVKZVP5D2VFQCYPZJ","bundle":"https://pith.science/pith/VO4NBNOGSEVKZVP5D2VFQCYPZJ/bundle.json","state":"https://pith.science/pith/VO4NBNOGSEVKZVP5D2VFQCYPZJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VO4NBNOGSEVKZVP5D2VFQCYPZJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:VO4NBNOGSEVKZVP5D2VFQCYPZJ","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":"45bb6eab3d1de7da5ede790c2a657a7d21438d8afbd3dd251fedc4f17231a880","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2011-07-25T15:57:37Z","title_canon_sha256":"1d5abe717e9f051910ce408ec54e3372f77cef7b8d0eca68962b0c872a3eebf2"},"schema_version":"1.0","source":{"id":"1107.4986","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1107.4986","created_at":"2026-05-18T02:01:10Z"},{"alias_kind":"arxiv_version","alias_value":"1107.4986v2","created_at":"2026-05-18T02:01:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1107.4986","created_at":"2026-05-18T02:01:10Z"},{"alias_kind":"pith_short_12","alias_value":"VO4NBNOGSEVK","created_at":"2026-05-18T12:26:44Z"},{"alias_kind":"pith_short_16","alias_value":"VO4NBNOGSEVKZVP5","created_at":"2026-05-18T12:26:44Z"},{"alias_kind":"pith_short_8","alias_value":"VO4NBNOG","created_at":"2026-05-18T12:26:44Z"}],"graph_snapshots":[{"event_id":"sha256:69854c1eba6906c937f95b55e9bcdb66658efd97f623b01163312710871212a7","target":"graph","created_at":"2026-05-18T02:01:10Z","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 have identified a star in the WASP archive photometry with an unusual lightcurve due to the total eclipse of a small, hot star by an apparently normal A-type star and with an orbital period of only 0.668d. From an analysis of the WASP lightcurve together with V-band and I_C-band photometry of the eclipse and a spectroscopic orbit for the A-type star we estimate that the companion star has a mass of (0.23+-0.03)Msun and a radius of (0.33+-0.01)Rsun, assuming that the A-type star is a main-sequence star with the metalicity appropriate for a thick-disk star. The effective temperature of the co","authors_text":"A. Collier-Cameron, B. Smalley, B.T. Gaensicke, D.R. Anderson, G. Nelemans, M.R. Burleigh, P.F.L. Maxted, R.G. West, R.H. Ostensen, S. Geier, S.J. O'Toole, T. Kupfer, T.R. Marsh, U. Heber","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2011-07-25T15:57:37Z","title":"Discovery of a stripped red giant core in a bright eclipsing binary system"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1107.4986","kind":"arxiv","version":2},"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":"sha256:8d23f3a3b3060fead631a68f1436d648ceab12ca85d0921c09e952a7966ba9c7","target":"record","created_at":"2026-05-18T02:01:10Z","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":"45bb6eab3d1de7da5ede790c2a657a7d21438d8afbd3dd251fedc4f17231a880","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2011-07-25T15:57:37Z","title_canon_sha256":"1d5abe717e9f051910ce408ec54e3372f77cef7b8d0eca68962b0c872a3eebf2"},"schema_version":"1.0","source":{"id":"1107.4986","kind":"arxiv","version":2}},"canonical_sha256":"abb8d0b5c6912aacd5fd1eaa580b0fca476b8b7676413a6f432d7b2b7c8c5d62","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"abb8d0b5c6912aacd5fd1eaa580b0fca476b8b7676413a6f432d7b2b7c8c5d62","first_computed_at":"2026-05-18T02:01:10.424159Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:01:10.424159Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"/rO0ilasmJJAHU9BSwJyAYyLmoApnU7ECqRKNVufqtwYstw/FfY9knyKUa+L6mThJ5f80zNOoHkEMcUvxuTsBg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:01:10.424754Z","signed_message":"canonical_sha256_bytes"},"source_id":"1107.4986","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8d23f3a3b3060fead631a68f1436d648ceab12ca85d0921c09e952a7966ba9c7","sha256:69854c1eba6906c937f95b55e9bcdb66658efd97f623b01163312710871212a7"],"state_sha256":"24da3e6ab66693f6f0edcc771775656eb853162d1e94617299db9d320720fec8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"afTf3GTlvRJWepFUBSZZLAu+oxLLYrBiIHh1i46vCCOpIGY5sVZF2M3TM/xWPmcHuL3EheJyBfFE6N/uHfETBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T13:50:57.417387Z","bundle_sha256":"094cbae3b64e1508dbd587796f1c50c7582708ea7ac34f480c21d7f53420ca35"}}