{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2004:2GQ3SEN3CY7TBBX7SJUOSND3WB","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":"c573e7cba7aa4fc8a85c036a81dd9196fcd950ea2f5e4202be44c041dec876f6","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2004-04-06T18:06:43Z","title_canon_sha256":"8784faae31652524559b07f58e21e5deb76cd0ca6ecfea14af795b624d2e2708"},"schema_version":"1.0","source":{"id":"astro-ph/0404138","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0404138","created_at":"2026-07-04T16:43:32Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0404138v1","created_at":"2026-07-04T16:43:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0404138","created_at":"2026-07-04T16:43:32Z"},{"alias_kind":"pith_short_12","alias_value":"2GQ3SEN3CY7T","created_at":"2026-07-04T16:43:32Z"},{"alias_kind":"pith_short_16","alias_value":"2GQ3SEN3CY7TBBX7","created_at":"2026-07-04T16:43:32Z"},{"alias_kind":"pith_short_8","alias_value":"2GQ3SEN3","created_at":"2026-07-04T16:43:32Z"}],"graph_snapshots":[{"event_id":"sha256:8b173b63d6dcd8a91cfac888ccdad142714a0dbb78ca5ce1dfbef0b99dd2fdc0","target":"graph","created_at":"2026-07-04T16:43:32Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/astro-ph/0404138/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The Virgo Cluster is the dominant mass concentration in the Local Supercluster and the largest collection of elliptical and lenticular galaxies in the nearby universe. In this paper, we present an introduction to the ACS Virgo Cluster Survey: a program to image, in the F475W and F850LP bandpasses (Sloan g and z), 100 early-type galaxies in the Virgo Cluster using the Advanced Camera for Surveys on the Hubble Space Telescope. We describe the selection of the program galaxies and their ensemble properties, the choice of filters, the field placement and orientation, the limiting magnitudes of the","authors_text":"Andres Jordan, David Merritt, Eric W. Peng, John L. Tonry, John P. Blakeslee, Laura Ferrarese, Michael J. West, Milos Milosavljevic, Patrick Cote, Simona Mei","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2004-04-06T18:06:43Z","title":"The ACS Virgo Cluster Survey. I. Introduction to the Survey"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0404138","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:f06f3c758b948c6d2603bc463d30c30e86bbd0352a8eabaa910ef69a9e672fa5","target":"record","created_at":"2026-07-04T16:43:32Z","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":"c573e7cba7aa4fc8a85c036a81dd9196fcd950ea2f5e4202be44c041dec876f6","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2004-04-06T18:06:43Z","title_canon_sha256":"8784faae31652524559b07f58e21e5deb76cd0ca6ecfea14af795b624d2e2708"},"schema_version":"1.0","source":{"id":"astro-ph/0404138","kind":"arxiv","version":1}},"canonical_sha256":"d1a1b911bb163f3086ff9268e9347bb07b66a6656847b192ba168cf42fc5a683","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d1a1b911bb163f3086ff9268e9347bb07b66a6656847b192ba168cf42fc5a683","first_computed_at":"2026-07-04T16:43:32.188359Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:43:32.188359Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"0BOJNZt1A2kSCYoBiQQKIg/XbnCtD5OLguClEULqW+FV30RI0BWrJwOJqFPwVSRTjgD2g8B0HZBvwOkW6e1ZCA==","signature_status":"signed_v1","signed_at":"2026-07-04T16:43:32.188756Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0404138","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f06f3c758b948c6d2603bc463d30c30e86bbd0352a8eabaa910ef69a9e672fa5","sha256:8b173b63d6dcd8a91cfac888ccdad142714a0dbb78ca5ce1dfbef0b99dd2fdc0"],"state_sha256":"9e6cc7f6033198a3efb188cce0caaa415ba4a34fcc869615e60a6addd09468e6"}