{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:WTWWWH6SJLWCXVTAEAFQRCIUIR","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":"b29177536aa0065d81569c0d3c3ff841236f2ded0a633e6665044437e4a6a146","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-10-02T20:00:05Z","title_canon_sha256":"292bb757f4a7162b1bc9ca227f7b1d9fbf0957a45106b632956ded511302e58b"},"schema_version":"1.0","source":{"id":"1410.0681","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1410.0681","created_at":"2026-05-18T01:41:53Z"},{"alias_kind":"arxiv_version","alias_value":"1410.0681v1","created_at":"2026-05-18T01:41:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1410.0681","created_at":"2026-05-18T01:41:53Z"},{"alias_kind":"pith_short_12","alias_value":"WTWWWH6SJLWC","created_at":"2026-05-18T12:28:54Z"},{"alias_kind":"pith_short_16","alias_value":"WTWWWH6SJLWCXVTA","created_at":"2026-05-18T12:28:54Z"},{"alias_kind":"pith_short_8","alias_value":"WTWWWH6S","created_at":"2026-05-18T12:28:54Z"}],"graph_snapshots":[{"event_id":"sha256:9748f2505c4ba5d5b8b72c7061a565afa374d50fc1593483b1803f43c1c69a06","target":"graph","created_at":"2026-05-18T01:41:53Z","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 present new constraints on the star formation histories of six ultra-faint dwarf galaxies: Bootes I, Canes Venatici II, Coma Berenices, Hercules, Leo IV, and Ursa Major I. Our analysis employs a combination of high-precision photometry obtained with the Advanced Camera for Surveys on the Hubble Space Telescope, medium-resolution spectroscopy obtained with the DEep Imaging Multi-Object Spectrograph on the W.M. Keck Observatory, and updated Victoria-Regina isochrones tailored to the abundance patterns appropriate for these galaxies. The data for five of these Milky Way satellites are best fit","authors_text":"Alvio Renzini, Don A. VandenBerg, Evan N. Kirby, Henry C. Ferguson, Jason S. Kalirai, Jason Tumlinson, Joshua D. Simon, Luis C. Vargas, Mario Gennaro, Marla Geha, Puragra Guhathakurta, Ricardo R. Munoz, Roberto J. Avila, Thomas M. Brown","cross_cats":["astro-ph.CO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-10-02T20:00:05Z","title":"The Quenching of the Ultra-Faint Dwarf Galaxies in the Reionization Era"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1410.0681","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":"sha256:2233b9a0e3b8f2ddf307e8542f99040dd15e9c28fb9802a076bb0ee4a466d0ab","target":"record","created_at":"2026-05-18T01:41:53Z","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":"b29177536aa0065d81569c0d3c3ff841236f2ded0a633e6665044437e4a6a146","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-10-02T20:00:05Z","title_canon_sha256":"292bb757f4a7162b1bc9ca227f7b1d9fbf0957a45106b632956ded511302e58b"},"schema_version":"1.0","source":{"id":"1410.0681","kind":"arxiv","version":1}},"canonical_sha256":"b4ed6b1fd24aec2bd660200b088914445bc72ad54a684d428f277629a26b25ce","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b4ed6b1fd24aec2bd660200b088914445bc72ad54a684d428f277629a26b25ce","first_computed_at":"2026-05-18T01:41:53.101882Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:41:53.101882Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"iyszPCpTClTBOcMKupJK0m+fRLZFSUXAurfiQaZUqiIBaZhff2T3q/RTKWW/s2v7nIL1LaZ3CEvktqb4w2n+DQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:41:53.102528Z","signed_message":"canonical_sha256_bytes"},"source_id":"1410.0681","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2233b9a0e3b8f2ddf307e8542f99040dd15e9c28fb9802a076bb0ee4a466d0ab","sha256:9748f2505c4ba5d5b8b72c7061a565afa374d50fc1593483b1803f43c1c69a06"],"state_sha256":"095a8eaed132cfa10dff52b3ea4471f55431d95b6c7336439cdbfab903c152bf"}