{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:5JSCUYPRTIWDUT4RQQQISWHGPD","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":"6da2d0f3aa7f485084c04e036ef2e46883ac2daddc8ea0c26497143826da08c4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-04-12T13:57:37Z","title_canon_sha256":"11ea53ff45997e8c8f844b2df6c0323f8675224dc99768f5fe455cdba7e9842d"},"schema_version":"1.0","source":{"id":"1004.1959","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1004.1959","created_at":"2026-05-18T00:48:48Z"},{"alias_kind":"arxiv_version","alias_value":"1004.1959v1","created_at":"2026-05-18T00:48:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1004.1959","created_at":"2026-05-18T00:48:48Z"},{"alias_kind":"pith_short_12","alias_value":"5JSCUYPRTIWD","created_at":"2026-05-18T12:26:04Z"},{"alias_kind":"pith_short_16","alias_value":"5JSCUYPRTIWDUT4R","created_at":"2026-05-18T12:26:04Z"},{"alias_kind":"pith_short_8","alias_value":"5JSCUYPR","created_at":"2026-05-18T12:26:04Z"}],"graph_snapshots":[{"event_id":"sha256:fa61fb4852592e008474a16a6fa28ced2076affbf66a8b61ea59622ccf22cfd4","target":"graph","created_at":"2026-05-18T00:48:48Z","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":"Our goal is to determine the rotational and magnetic-related activity properties of stars at different stages of  evolution. We have focussed our attention on 6 young loose stellar associations within 100 pc and ages in the range 8-70 Myr: TW Hydrae (~8 Myr), beta Pictoris (~10 Myr), Tucana/Horologium, Columba, Carina (~30 Myr), and AB Doradus (~70 Myr). Additional data on alpha Persei and the Pleiades  from the literature is also considered. Rotational periods of stars showing rotational modulation due to photospheric magnetic activity (i.e. starspots) have been determined applying the Lomb-S","authors_text":"A.C. Lanzafame, E.F. Guinan, M. Turatto, S. Desidera, S. Messina","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-04-12T13:57:37Z","title":"RACE-OC Project: Rotation and variability in young stellar associations within 100 pc"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1004.1959","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":"sha256:5fb5874c275b1d48e7c32c7cfff3a5374d8d4aeafacff21e80d83468aca11036","target":"record","created_at":"2026-05-18T00:48:48Z","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":"6da2d0f3aa7f485084c04e036ef2e46883ac2daddc8ea0c26497143826da08c4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-04-12T13:57:37Z","title_canon_sha256":"11ea53ff45997e8c8f844b2df6c0323f8675224dc99768f5fe455cdba7e9842d"},"schema_version":"1.0","source":{"id":"1004.1959","kind":"arxiv","version":1}},"canonical_sha256":"ea642a61f19a2c3a4f9184208958e678d6d57114bc105d69c4bb9c15a90e695d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ea642a61f19a2c3a4f9184208958e678d6d57114bc105d69c4bb9c15a90e695d","first_computed_at":"2026-05-18T00:48:48.176664Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:48:48.176664Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"E5gv59Y4ISfd0UNJxmbBb4Jl/rckocZupI3/adb23hWhCvmm8+reTqTTPwFIyYJeE4rIzIxv+AyLK1xMy/3XBg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:48:48.177502Z","signed_message":"canonical_sha256_bytes"},"source_id":"1004.1959","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5fb5874c275b1d48e7c32c7cfff3a5374d8d4aeafacff21e80d83468aca11036","sha256:fa61fb4852592e008474a16a6fa28ced2076affbf66a8b61ea59622ccf22cfd4"],"state_sha256":"8713fc7f4ec1864f6712fa503842eb09bedff6e76c33b2f692492db12c47374d"}