{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:G5VEKTST6KISQUGK7E6CQYDQSW","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":"4b96310346fb4a91579fec5a3a554731b805df8f9116903d9159a44c98050476","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-sa/3.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-06-04T01:29:43Z","title_canon_sha256":"b6b6d812c497a600126ed5f3c8efd19740891dee5959e3715aba7582f7fa9fe0"},"schema_version":"1.0","source":{"id":"0906.0803","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0906.0803","created_at":"2026-05-18T02:34:45Z"},{"alias_kind":"arxiv_version","alias_value":"0906.0803v4","created_at":"2026-05-18T02:34:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0906.0803","created_at":"2026-05-18T02:34:45Z"},{"alias_kind":"pith_short_12","alias_value":"G5VEKTST6KIS","created_at":"2026-05-18T12:25:59Z"},{"alias_kind":"pith_short_16","alias_value":"G5VEKTST6KISQUGK","created_at":"2026-05-18T12:25:59Z"},{"alias_kind":"pith_short_8","alias_value":"G5VEKTST","created_at":"2026-05-18T12:25:59Z"}],"graph_snapshots":[{"event_id":"sha256:0769a6e686692a1db338987a9640a67a8f836b9b823ad29b24a0ba2d41586200","target":"graph","created_at":"2026-05-18T02:34:45Z","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":"Clusters of galaxies in most previous catalogs have redshifts z<0.3. Using the photometric redshifts of galaxies from the Sloan Digital Sky Survey Data Release 6 (SDSS DR6), we identify 39,668 clusters in the redshift range 0.05< z <0.6 with more than eight luminous (M_r<-21) member galaxies. Cluster redshifts are estimated accurately with an uncertainty less than 0.022. The contamination rate of member galaxies is found to be roughly 20%, and the completeness of member galaxy detection reaches to ~90%. Monte Carlo simulations show that the cluster detection rate is more than 90% for massive (","authors_text":"F. S. Liu, J. L. Han, Z. L. Wen","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by-nc-sa/3.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-06-04T01:29:43Z","title":"Galaxy clusters identified from the SDSS DR6 and their properties"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0906.0803","kind":"arxiv","version":4},"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":"sha256:04fc261855abdb8e4a47b0c8066a3690cfced4ea2fdbbc2ec6efd086afee671c","target":"record","created_at":"2026-05-18T02:34:45Z","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":"4b96310346fb4a91579fec5a3a554731b805df8f9116903d9159a44c98050476","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-sa/3.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-06-04T01:29:43Z","title_canon_sha256":"b6b6d812c497a600126ed5f3c8efd19740891dee5959e3715aba7582f7fa9fe0"},"schema_version":"1.0","source":{"id":"0906.0803","kind":"arxiv","version":4}},"canonical_sha256":"376a454e53f2912850caf93c28607095a3d026273a9b8bc6b7c80b1d72651311","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"376a454e53f2912850caf93c28607095a3d026273a9b8bc6b7c80b1d72651311","first_computed_at":"2026-05-18T02:34:45.936073Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:34:45.936073Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"GCevEkLgwMAjmxiJPrLvTmPmhWrvZ6V6je5G0NwAooB6MdHymoRn10MwJTxBSwC5eWi3FNGVhKnCdUkaVFhvCg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:34:45.936490Z","signed_message":"canonical_sha256_bytes"},"source_id":"0906.0803","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:04fc261855abdb8e4a47b0c8066a3690cfced4ea2fdbbc2ec6efd086afee671c","sha256:0769a6e686692a1db338987a9640a67a8f836b9b823ad29b24a0ba2d41586200"],"state_sha256":"4f408ee8623f86b0d9945dfc6e23d072d234a708e9c917a7815758e5242b2554"}