{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:ASTXEKUCRW5V3F26MH4DW7WG3B","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":"f48e44c7e119db8ee3fa66789eea8562c80d6f80d46d9a3597dd7ad24f476aab","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-12-12T20:45:07Z","title_canon_sha256":"66ef10385118ae3a44cc44d09d8e7c095294f3a9858ae2b34e5e31444f0f1699"},"schema_version":"1.0","source":{"id":"1112.2691","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1112.2691","created_at":"2026-05-18T01:59:11Z"},{"alias_kind":"arxiv_version","alias_value":"1112.2691v2","created_at":"2026-05-18T01:59:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1112.2691","created_at":"2026-05-18T01:59:11Z"},{"alias_kind":"pith_short_12","alias_value":"ASTXEKUCRW5V","created_at":"2026-05-18T12:26:24Z"},{"alias_kind":"pith_short_16","alias_value":"ASTXEKUCRW5V3F26","created_at":"2026-05-18T12:26:24Z"},{"alias_kind":"pith_short_8","alias_value":"ASTXEKUC","created_at":"2026-05-18T12:26:24Z"}],"graph_snapshots":[{"event_id":"sha256:f04a8d0b59ec4db17cf97543d74b2c01f4e9bd9f54d9ac7440b0bf988380b284","target":"graph","created_at":"2026-05-18T01:59:11Z","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 report the first results from the Z-FOURGE survey: the discovery of a candidate galaxy cluster at z = 2.2 consisting of two compact overdensities with red galaxies detected at >20{\\sigma} above the mean surface density. The discovery was made possible by a new deep (Ks < 24.8 AB 5{\\sigma}) Magellan/FourStar near-IR imaging survey with 5 custom medium-bandwidth filters. The filters pinpoint the location of the Balmer/4000\\AA\\ break in evolved stellar populations at 1.5 < z < 3.5, yielding significantly more accurate photometric redshifts than possible with broadband imaging alone. The overde","authors_text":"Andy Monson, Caroline M. S. Straatman, Casey Papovich, Daniel D. Kelson, David Murphy, Glenn G. Kacprzak, Gregory B. Poole, Ivo Labb\\'e, Karl Glazebrook, Kim-Vy H. Tran, Lee R. Spitler, Patrick J. McCarthy, Pieter van Dokkum, Ryan Quadri, S. Eric Persson, Vithal Tilvi","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-12-12T20:45:07Z","title":"First Results from Z-FOURGE: Discovery of a Candidate Cluster at z = 2.2 in COSMOS"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1112.2691","kind":"arxiv","version":2},"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":"sha256:849db6ebdc194a8da71493746460ee95c36c38ed6a90f3568d46c4cc65b9b330","target":"record","created_at":"2026-05-18T01:59:11Z","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":"f48e44c7e119db8ee3fa66789eea8562c80d6f80d46d9a3597dd7ad24f476aab","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-12-12T20:45:07Z","title_canon_sha256":"66ef10385118ae3a44cc44d09d8e7c095294f3a9858ae2b34e5e31444f0f1699"},"schema_version":"1.0","source":{"id":"1112.2691","kind":"arxiv","version":2}},"canonical_sha256":"04a7722a828dbb5d975e61f83b7ec6d86d8407054c4f9a62be01775ab3c90afa","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"04a7722a828dbb5d975e61f83b7ec6d86d8407054c4f9a62be01775ab3c90afa","first_computed_at":"2026-05-18T01:59:11.489249Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:59:11.489249Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"0r6lW5lnL9rGu5izTk2RB4H2YvM+ah+IBtZkRygWWTrEuvm9RIzUemEFXzsPz5KL7PoKRWt2zx0a79hYt+sQAw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:59:11.489914Z","signed_message":"canonical_sha256_bytes"},"source_id":"1112.2691","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:849db6ebdc194a8da71493746460ee95c36c38ed6a90f3568d46c4cc65b9b330","sha256:f04a8d0b59ec4db17cf97543d74b2c01f4e9bd9f54d9ac7440b0bf988380b284"],"state_sha256":"dae4151941531f74ce7ad9c15c61a1fe76e29c34baf592669a925cccf70f3cd0"}