{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:N57QXSKM73HOQ5LR2TWMWFCVEU","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":"9f36cadd410c07840b5f2a44e80a8e82da571aa7da38297d493a97accf8f1f47","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-08-18T19:46:16Z","title_canon_sha256":"bda789365e0b37aaf9100d72b305bb28d1de6ff08d05d3f6ea61c0270154d37e"},"schema_version":"1.0","source":{"id":"0908.2619","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0908.2619","created_at":"2026-05-18T02:12:25Z"},{"alias_kind":"arxiv_version","alias_value":"0908.2619v1","created_at":"2026-05-18T02:12:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0908.2619","created_at":"2026-05-18T02:12:25Z"},{"alias_kind":"pith_short_12","alias_value":"N57QXSKM73HO","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_16","alias_value":"N57QXSKM73HOQ5LR","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_8","alias_value":"N57QXSKM","created_at":"2026-05-18T12:26:00Z"}],"graph_snapshots":[{"event_id":"sha256:d08e279c8f6a61d8a6adda7f12ccefcd2b72e77b9928c49e985f6dec550e2524","target":"graph","created_at":"2026-05-18T02:12:25Z","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 results from a study of proto-globular cluster candidates in the interacting galaxy system Arp 284 (NGC 7714/5) using data from the Hubble Space Telescope. Previous studies of the Antennae and M51 have suggested that the majority of young massive star clusters dissolve within 20 Myr due to mass loss. We use the evolutionary synthesis code Starburst99 to estimate ages and extinctions for approximately 175 clusters visible with HST. We also use lower-resolution GALEX and ground-based H-alpha data to estimate the ages of the giant HII regions in which these clusters are found, and comp","authors_text":"Beverly J. Smith (East Tenn.State), Bradley W. Peterson (Iowa State), Curtis Struck (Iowa State), Mark Hancock (UC Riverside)","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-08-18T19:46:16Z","title":"Star Clusters in the Interacting Galaxy System Arp 284"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0908.2619","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":"sha256:56c1fd027dbfb1be186f8a4f77fc772178fa59a2f3fbf073a7423479a3fed29f","target":"record","created_at":"2026-05-18T02:12:25Z","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":"9f36cadd410c07840b5f2a44e80a8e82da571aa7da38297d493a97accf8f1f47","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-08-18T19:46:16Z","title_canon_sha256":"bda789365e0b37aaf9100d72b305bb28d1de6ff08d05d3f6ea61c0270154d37e"},"schema_version":"1.0","source":{"id":"0908.2619","kind":"arxiv","version":1}},"canonical_sha256":"6f7f0bc94cfecee87571d4eccb145525239c0c2a48022b4b32c334af7acdb2f3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6f7f0bc94cfecee87571d4eccb145525239c0c2a48022b4b32c334af7acdb2f3","first_computed_at":"2026-05-18T02:12:25.482600Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:12:25.482600Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ORS2k60rUscwEBhSVGdvDOrgxZmlYSubijqoQuLq5IibgPHFKkOW0Pe9kdSHtvLsQJtgjdUfYU5KZXfzO576BQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:12:25.483145Z","signed_message":"canonical_sha256_bytes"},"source_id":"0908.2619","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:56c1fd027dbfb1be186f8a4f77fc772178fa59a2f3fbf073a7423479a3fed29f","sha256:d08e279c8f6a61d8a6adda7f12ccefcd2b72e77b9928c49e985f6dec550e2524"],"state_sha256":"796035f2777c5e763a71ce16043a0ea44844842027aba6dfe3dce7fa98960616"}