{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2004:SHXULO473IPDDW6FPOCVYQPZDD","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":"3b0890a7216b2c013f7393d8d9ebe936f10386dc7baa79d41c99ad0302bf8bbb","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2004-01-07T19:56:32Z","title_canon_sha256":"812402de0196afdc601d1aeb1fd69509edadfb34d4e37bddd5070b0e57bc5c8f"},"schema_version":"1.0","source":{"id":"astro-ph/0401085","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0401085","created_at":"2026-05-18T01:40:37Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0401085v1","created_at":"2026-05-18T01:40:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0401085","created_at":"2026-05-18T01:40:37Z"},{"alias_kind":"pith_short_12","alias_value":"SHXULO473IPD","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_16","alias_value":"SHXULO473IPDDW6F","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_8","alias_value":"SHXULO47","created_at":"2026-05-18T12:25:52Z"}],"graph_snapshots":[{"event_id":"sha256:7d6d8f76095b593e76dc6d1b1e85430f67c7aad23710bc4de9f2bb312e67bad6","target":"graph","created_at":"2026-05-18T01:40:37Z","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 monitored four fields containing nine previously identified members of the MBM 12 association to search for photometric variability and periodicity in these pre-main sequence stars. Seven of the nine are found to be variable and definite periodicity (of 1.2, 2.6 and 6.2 days) is found for three of them, including the classical T Tauri star LkH-alpha 264. Two other members are possibly periodic but each requires confirmation. In addition, a \"field\" star that is associated with the X-ray source RX J0255.9+2005 was discovered to be a variable with a period of 4.2 days. Our results indicat","authors_text":"Eric C. Williams, Wendy P. Hawley, William Herbst","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2004-01-07T19:56:32Z","title":"A Photometric Study of Stars in the MBM 12 Association"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0401085","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:f00f308b0ecbe53a313bacdbf02599577c1efaec41a69929770c4f0ba55ba754","target":"record","created_at":"2026-05-18T01:40:37Z","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":"3b0890a7216b2c013f7393d8d9ebe936f10386dc7baa79d41c99ad0302bf8bbb","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2004-01-07T19:56:32Z","title_canon_sha256":"812402de0196afdc601d1aeb1fd69509edadfb34d4e37bddd5070b0e57bc5c8f"},"schema_version":"1.0","source":{"id":"astro-ph/0401085","kind":"arxiv","version":1}},"canonical_sha256":"91ef45bb9fda1e31dbc57b855c41f918e573606ff12b402a294c7c0ef1fcc62d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"91ef45bb9fda1e31dbc57b855c41f918e573606ff12b402a294c7c0ef1fcc62d","first_computed_at":"2026-05-18T01:40:37.510627Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:40:37.510627Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"bYuW5VKUaC5YrppvDGb5giHc78M4Fqo4ah1e0sEBIOnXFhvuIwoZRS9opSvmIc4CL9OgsbymN2xajdmufqixBg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:40:37.511265Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0401085","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f00f308b0ecbe53a313bacdbf02599577c1efaec41a69929770c4f0ba55ba754","sha256:7d6d8f76095b593e76dc6d1b1e85430f67c7aad23710bc4de9f2bb312e67bad6"],"state_sha256":"b93b8cdedfbd7216851913bc892c31890a1648a94ca394c77a8bc7233c9a6ecc"}