{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:CG5KLEOIQ2I66WMKE4ODNNJURJ","short_pith_number":"pith:CG5KLEOI","canonical_record":{"source":{"id":"1909.07014","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-09-16T06:31:54Z","cross_cats_sorted":[],"title_canon_sha256":"81c8e91a6c2847f2b40168842137cbfc161e476ecba9b5941e661352d5006b06","abstract_canon_sha256":"c133f75b4b5bcaf07332c5302fba12a89ef5b7f1b297f1349c76e98aee791c05"},"schema_version":"1.0"},"canonical_sha256":"11baa591c88691ef598a271c36b5348a7bf46e74e5034ac7dfaefdda85a60798","source":{"kind":"arxiv","id":"1909.07014","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1909.07014","created_at":"2026-07-05T00:04:52Z"},{"alias_kind":"arxiv_version","alias_value":"1909.07014v1","created_at":"2026-07-05T00:04:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1909.07014","created_at":"2026-07-05T00:04:52Z"},{"alias_kind":"pith_short_12","alias_value":"CG5KLEOIQ2I6","created_at":"2026-07-05T00:04:52Z"},{"alias_kind":"pith_short_16","alias_value":"CG5KLEOIQ2I66WMK","created_at":"2026-07-05T00:04:52Z"},{"alias_kind":"pith_short_8","alias_value":"CG5KLEOI","created_at":"2026-07-05T00:04:52Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:CG5KLEOIQ2I66WMKE4ODNNJURJ","target":"record","payload":{"canonical_record":{"source":{"id":"1909.07014","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-09-16T06:31:54Z","cross_cats_sorted":[],"title_canon_sha256":"81c8e91a6c2847f2b40168842137cbfc161e476ecba9b5941e661352d5006b06","abstract_canon_sha256":"c133f75b4b5bcaf07332c5302fba12a89ef5b7f1b297f1349c76e98aee791c05"},"schema_version":"1.0"},"canonical_sha256":"11baa591c88691ef598a271c36b5348a7bf46e74e5034ac7dfaefdda85a60798","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:04:52.405409Z","signature_b64":"9M9nHMqvk2dXJbYGUdS20DkXP0GgJJ32kmjdV/ZBdZhW4St91cbOXl+WZO064eAFFHs0Bbh9CN1d+1YDtsbWBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"11baa591c88691ef598a271c36b5348a7bf46e74e5034ac7dfaefdda85a60798","last_reissued_at":"2026-07-05T00:04:52.405051Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:04:52.405051Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1909.07014","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":"2026-07-05T00:04:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xpvc02rYwrAi6US2VP4ttwohQqd/h2vlvzIVvfVFZB71lx0mybhNSXQFYEC3qT5PkbMJX33ns6Fi2GW7mGMOCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-27T01:41:07.357611Z"},"content_sha256":"e161bafc1f51c5046fc36aaf63e88cab4cbbb256494c5ef97aad670b864c337a","schema_version":"1.0","event_id":"sha256:e161bafc1f51c5046fc36aaf63e88cab4cbbb256494c5ef97aad670b864c337a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:CG5KLEOIQ2I66WMKE4ODNNJURJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The W-subtype active contact binary PZ UMa with a possible more massive tertiary component","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"B. Soonthornthum, X. Zhou","submitted_at":"2019-09-16T06:31:54Z","abstract_excerpt":"Two sets of multiple-color ($B, V, R_c, I_c$) light curves of PZ UMa were observed in dependently with the 2.4 meter telescope at the Thai National Observatory and the 1 meter telescope at Yunnan Observatories. The light curves were analyzed with the Wilson-Devinney program and the two sets of light curves produced consistent results, which show that PZ UMa is a W-subtype contact binary with an extreme mass ratio ($M_{1}/M_{2} = 0.18)$. The basic physical parameters of PZ UMa were determined to be $M_{2} = 0.77(2)M_\\odot$, $M_{1} = 0.14(1)M_\\odot$, $R_{2} = 0.92(1)R_\\odot$, $R_{1} = 0.43(1)R_\\"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1909.07014","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1909.07014/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T00:04:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/fOaT/m5Q+7ZmBRSGHAGyNU9WTGi+JEPS7yUOyC4e5keuhRMqN5ImM2/zAU6c760e8S/LlJ1KWFFQAdikrYDCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-27T01:41:07.357989Z"},"content_sha256":"5b0ff28a1f0673246f326c128d7bd9f0d3b4d27e2a86bfa4cf26b058913816be","schema_version":"1.0","event_id":"sha256:5b0ff28a1f0673246f326c128d7bd9f0d3b4d27e2a86bfa4cf26b058913816be"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CG5KLEOIQ2I66WMKE4ODNNJURJ/bundle.json","state_url":"https://pith.science/pith/CG5KLEOIQ2I66WMKE4ODNNJURJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CG5KLEOIQ2I66WMKE4ODNNJURJ/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":"2026-07-27T01:41:07Z","links":{"resolver":"https://pith.science/pith/CG5KLEOIQ2I66WMKE4ODNNJURJ","bundle":"https://pith.science/pith/CG5KLEOIQ2I66WMKE4ODNNJURJ/bundle.json","state":"https://pith.science/pith/CG5KLEOIQ2I66WMKE4ODNNJURJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CG5KLEOIQ2I66WMKE4ODNNJURJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:CG5KLEOIQ2I66WMKE4ODNNJURJ","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":"c133f75b4b5bcaf07332c5302fba12a89ef5b7f1b297f1349c76e98aee791c05","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-09-16T06:31:54Z","title_canon_sha256":"81c8e91a6c2847f2b40168842137cbfc161e476ecba9b5941e661352d5006b06"},"schema_version":"1.0","source":{"id":"1909.07014","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1909.07014","created_at":"2026-07-05T00:04:52Z"},{"alias_kind":"arxiv_version","alias_value":"1909.07014v1","created_at":"2026-07-05T00:04:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1909.07014","created_at":"2026-07-05T00:04:52Z"},{"alias_kind":"pith_short_12","alias_value":"CG5KLEOIQ2I6","created_at":"2026-07-05T00:04:52Z"},{"alias_kind":"pith_short_16","alias_value":"CG5KLEOIQ2I66WMK","created_at":"2026-07-05T00:04:52Z"},{"alias_kind":"pith_short_8","alias_value":"CG5KLEOI","created_at":"2026-07-05T00:04:52Z"}],"graph_snapshots":[{"event_id":"sha256:5b0ff28a1f0673246f326c128d7bd9f0d3b4d27e2a86bfa4cf26b058913816be","target":"graph","created_at":"2026-07-05T00:04:52Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/1909.07014/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Two sets of multiple-color ($B, V, R_c, I_c$) light curves of PZ UMa were observed in dependently with the 2.4 meter telescope at the Thai National Observatory and the 1 meter telescope at Yunnan Observatories. The light curves were analyzed with the Wilson-Devinney program and the two sets of light curves produced consistent results, which show that PZ UMa is a W-subtype contact binary with an extreme mass ratio ($M_{1}/M_{2} = 0.18)$. The basic physical parameters of PZ UMa were determined to be $M_{2} = 0.77(2)M_\\odot$, $M_{1} = 0.14(1)M_\\odot$, $R_{2} = 0.92(1)R_\\odot$, $R_{1} = 0.43(1)R_\\","authors_text":"B. Soonthornthum, X. Zhou","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-09-16T06:31:54Z","title":"The W-subtype active contact binary PZ UMa with a possible more massive tertiary component"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1909.07014","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:e161bafc1f51c5046fc36aaf63e88cab4cbbb256494c5ef97aad670b864c337a","target":"record","created_at":"2026-07-05T00:04:52Z","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":"c133f75b4b5bcaf07332c5302fba12a89ef5b7f1b297f1349c76e98aee791c05","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-09-16T06:31:54Z","title_canon_sha256":"81c8e91a6c2847f2b40168842137cbfc161e476ecba9b5941e661352d5006b06"},"schema_version":"1.0","source":{"id":"1909.07014","kind":"arxiv","version":1}},"canonical_sha256":"11baa591c88691ef598a271c36b5348a7bf46e74e5034ac7dfaefdda85a60798","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"11baa591c88691ef598a271c36b5348a7bf46e74e5034ac7dfaefdda85a60798","first_computed_at":"2026-07-05T00:04:52.405051Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:04:52.405051Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9M9nHMqvk2dXJbYGUdS20DkXP0GgJJ32kmjdV/ZBdZhW4St91cbOXl+WZO064eAFFHs0Bbh9CN1d+1YDtsbWBw==","signature_status":"signed_v1","signed_at":"2026-07-05T00:04:52.405409Z","signed_message":"canonical_sha256_bytes"},"source_id":"1909.07014","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e161bafc1f51c5046fc36aaf63e88cab4cbbb256494c5ef97aad670b864c337a","sha256:5b0ff28a1f0673246f326c128d7bd9f0d3b4d27e2a86bfa4cf26b058913816be"],"state_sha256":"96d1070b7bfbe4f81881a5b7ad30f673c3b210fb24ff8e5723c6baa08bc2e293"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dJbPGg8gQJSt2AslWU+axuOeotNsePR2U3XUiXl6cmbnmdB4ZjAEFiFfPzEYcqB0pFkJKkhdaq3reK1sxAOECQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-27T01:41:07.360404Z","bundle_sha256":"497fb739ec47146963485462f134212476a760b0172ad981229cc8cb2e19411b"}}