{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2003:EDYBW6QTB34NZUBOOEC7GUL3YB","short_pith_number":"pith:EDYBW6QT","schema_version":"1.0","canonical_sha256":"20f01b7a130ef8dcd02e7105f3517bc07f0ef7227ef265218c480efd7a23f520","source":{"kind":"arxiv","id":"astro-ph/0301165","version":1},"attestation_state":"computed","paper":{"title":"The Recurrent Nova U Scorpii in the 1999 Outburst: the First Detection of a Significant Orbital-Period Change","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"2), (2) Kyoto U., (3) U. Tokyo), Izumi Hachisu (3) ((1) Okayama U., Katsura Matsumoto (1, Taichi Kato (2)","submitted_at":"2003-01-10T08:44:36Z","abstract_excerpt":"In this paper we present and discuss our time-resolved photometry of an eclipsing recurrent nova, U Sco, during an outburst in 1999, which was conducted from immediately after the optical maximum to the final fading toward the quiescence. In the first-ever complete light-curve, a few primary and secondary eclipses of the binary system were detected, and the timings of the minima were determined. We found that the eclipses showed no totality during the outburst. The depth of the primary eclipses was 0.4-0.8 mag, much shallower than that in quiescence. In the plateau phase, very little irradiati"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"astro-ph/0301165","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2003-01-10T08:44:36Z","cross_cats_sorted":[],"title_canon_sha256":"ec881e1ff653002128cec02d8be89a98d077812fc6008d319cf5172d11ab2f7b","abstract_canon_sha256":"9fc9e109ebf7b3c48425b568eb02067494fbbc1f79305944b40df871e033f4f2"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:40:39.615162Z","signature_b64":"/uzjcRZGu7tLOUJb856FS1PCFUXLBsRBMI0eHFY7VVhqnh51HUVKRwkLYdc+VquyTMSQJl2OAI0MZodMzCKyBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"20f01b7a130ef8dcd02e7105f3517bc07f0ef7227ef265218c480efd7a23f520","last_reissued_at":"2026-05-18T01:40:39.614481Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:40:39.614481Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The Recurrent Nova U Scorpii in the 1999 Outburst: the First Detection of a Significant Orbital-Period Change","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"2), (2) Kyoto U., (3) U. Tokyo), Izumi Hachisu (3) ((1) Okayama U., Katsura Matsumoto (1, Taichi Kato (2)","submitted_at":"2003-01-10T08:44:36Z","abstract_excerpt":"In this paper we present and discuss our time-resolved photometry of an eclipsing recurrent nova, U Sco, during an outburst in 1999, which was conducted from immediately after the optical maximum to the final fading toward the quiescence. In the first-ever complete light-curve, a few primary and secondary eclipses of the binary system were detected, and the timings of the minima were determined. We found that the eclipses showed no totality during the outburst. The depth of the primary eclipses was 0.4-0.8 mag, much shallower than that in quiescence. In the plateau phase, very little irradiati"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0301165","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0301165","created_at":"2026-05-18T01:40:39.614573+00:00"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0301165v1","created_at":"2026-05-18T01:40:39.614573+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0301165","created_at":"2026-05-18T01:40:39.614573+00:00"},{"alias_kind":"pith_short_12","alias_value":"EDYBW6QTB34N","created_at":"2026-05-18T12:25:51.375804+00:00"},{"alias_kind":"pith_short_16","alias_value":"EDYBW6QTB34NZUBO","created_at":"2026-05-18T12:25:51.375804+00:00"},{"alias_kind":"pith_short_8","alias_value":"EDYBW6QT","created_at":"2026-05-18T12:25:51.375804+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/EDYBW6QTB34NZUBOOEC7GUL3YB","json":"https://pith.science/pith/EDYBW6QTB34NZUBOOEC7GUL3YB.json","graph_json":"https://pith.science/api/pith-number/EDYBW6QTB34NZUBOOEC7GUL3YB/graph.json","events_json":"https://pith.science/api/pith-number/EDYBW6QTB34NZUBOOEC7GUL3YB/events.json","paper":"https://pith.science/paper/EDYBW6QT"},"agent_actions":{"view_html":"https://pith.science/pith/EDYBW6QTB34NZUBOOEC7GUL3YB","download_json":"https://pith.science/pith/EDYBW6QTB34NZUBOOEC7GUL3YB.json","view_paper":"https://pith.science/paper/EDYBW6QT","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=astro-ph/0301165&json=true","fetch_graph":"https://pith.science/api/pith-number/EDYBW6QTB34NZUBOOEC7GUL3YB/graph.json","fetch_events":"https://pith.science/api/pith-number/EDYBW6QTB34NZUBOOEC7GUL3YB/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/EDYBW6QTB34NZUBOOEC7GUL3YB/action/timestamp_anchor","attest_storage":"https://pith.science/pith/EDYBW6QTB34NZUBOOEC7GUL3YB/action/storage_attestation","attest_author":"https://pith.science/pith/EDYBW6QTB34NZUBOOEC7GUL3YB/action/author_attestation","sign_citation":"https://pith.science/pith/EDYBW6QTB34NZUBOOEC7GUL3YB/action/citation_signature","submit_replication":"https://pith.science/pith/EDYBW6QTB34NZUBOOEC7GUL3YB/action/replication_record"}},"created_at":"2026-05-18T01:40:39.614573+00:00","updated_at":"2026-05-18T01:40:39.614573+00:00"}