{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:TD6CE7ZHDTP5KKUM4AOHJ5HEMF","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":"cddcede3025cf5033c71821737ece99cfc33417f08cf5861be015fc9306988b0","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2009-04-28T00:46:09Z","title_canon_sha256":"774a5b21fa98e0300a25d3652f0a5f2ace94af7d32c26b0eff6f6d5b363aa669"},"schema_version":"1.0","source":{"id":"0904.4287","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0904.4287","created_at":"2026-05-18T04:29:43Z"},{"alias_kind":"arxiv_version","alias_value":"0904.4287v1","created_at":"2026-05-18T04:29:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0904.4287","created_at":"2026-05-18T04:29:43Z"},{"alias_kind":"pith_short_12","alias_value":"TD6CE7ZHDTP5","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_16","alias_value":"TD6CE7ZHDTP5KKUM","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_8","alias_value":"TD6CE7ZH","created_at":"2026-05-18T12:26:01Z"}],"graph_snapshots":[{"event_id":"sha256:6c7d5b0f36c2d89450326678fc5ef7e2598e1d76a597c315be90a1b81636135b","target":"graph","created_at":"2026-05-18T04:29:43Z","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 integrated photometry and color-magnitude diagrams for 161 star clusters in M33, of which 115 were previously uncataloged, using the Advanced Camera For Surveys Wide Field Channel onboard the Hubble Space Telescope. The integrated V-band magnitudes of these clusters range from Mv~-9 to as faint as Mv~-4, extending the depth of the existing M33 cluster catalogs by ~1 mag. Comparisons of theoretical isochrones to the color-magnitude diagrams using the Padova models yield ages for 148 of these star clusters. The ages range from Log (t)~7.0 to Log (t)~9.0. Our color-magnitude diagrams a","authors_text":"Ata Sarajedini, Donald R. Garnett, Izaskun San Roman, Jon A. Holtzman","cross_cats":["astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2009-04-28T00:46:09Z","title":"Newly Identified Star Clusters in M33. II. Radial HST/ACS Fields"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0904.4287","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":"sha256:6fda0108f967d50ee7ff01c74ef52cca71db30a3b2006be5ee0557eea23b296e","target":"record","created_at":"2026-05-18T04:29:43Z","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":"cddcede3025cf5033c71821737ece99cfc33417f08cf5861be015fc9306988b0","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2009-04-28T00:46:09Z","title_canon_sha256":"774a5b21fa98e0300a25d3652f0a5f2ace94af7d32c26b0eff6f6d5b363aa669"},"schema_version":"1.0","source":{"id":"0904.4287","kind":"arxiv","version":1}},"canonical_sha256":"98fc227f271cdfd52a8ce01c74f4e4615ee250458248af62f4c4975fbd6644f2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"98fc227f271cdfd52a8ce01c74f4e4615ee250458248af62f4c4975fbd6644f2","first_computed_at":"2026-05-18T04:29:43.312457Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:29:43.312457Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"rNGJkhNWbf9F4w1JqnXZeiLDXQDsvkuhwVOCHRO9Eo/MRlzPGmrzZ6QT86wCP2zWabQyeJVIXGUeaXZr4kVlBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T04:29:43.312849Z","signed_message":"canonical_sha256_bytes"},"source_id":"0904.4287","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6fda0108f967d50ee7ff01c74ef52cca71db30a3b2006be5ee0557eea23b296e","sha256:6c7d5b0f36c2d89450326678fc5ef7e2598e1d76a597c315be90a1b81636135b"],"state_sha256":"899c9a8526d05398666e8ed4a0488ea4736e0a69f2b8ef13154d8dacb4620c4a"}