{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:BMUFXO7C66RG74GH22O46MTB5C","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":"a1b0c6f39467b73769cc95a8547b3df396ae17366f2071326fc08fa87a682304","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-11-11T12:55:39Z","title_canon_sha256":"08f608170d851e5c4b55e2da6fdb8a4504cd86c6e358eb36c13a87513328e764"},"schema_version":"1.0","source":{"id":"1111.2726","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1111.2726","created_at":"2026-05-18T01:59:40Z"},{"alias_kind":"arxiv_version","alias_value":"1111.2726v2","created_at":"2026-05-18T01:59:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1111.2726","created_at":"2026-05-18T01:59:40Z"},{"alias_kind":"pith_short_12","alias_value":"BMUFXO7C66RG","created_at":"2026-05-18T12:26:24Z"},{"alias_kind":"pith_short_16","alias_value":"BMUFXO7C66RG74GH","created_at":"2026-05-18T12:26:24Z"},{"alias_kind":"pith_short_8","alias_value":"BMUFXO7C","created_at":"2026-05-18T12:26:24Z"}],"graph_snapshots":[{"event_id":"sha256:e45f53263fd087a64903c6e158b8f4864c26aac59fd281f129b95b0c4e44d051","target":"graph","created_at":"2026-05-18T01:59:40Z","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":"Aims. We present a determination of the intrinsic colors and ages of galaxies at very high redshift, in particular old galaxies (OGs) within extremely red objects (EROs). To date, the definition of EROs has been restricted to objects with z<2.5, however, here consider objects with the same properties but shifted to higher redshifts (z>2.5). We therefore, refer to these objects as very high-redshift EROs (Z-EROS, herein). Methods. We analyze 63,550 galaxies selected in the XMM-LSS field. To obtain a reasonably sized sample of EROs, it is essential to consider a very wide area surveys. We identi","authors_text":"M. Lopez-Corredoira, N. Castro-Rodriguez","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-11-11T12:55:39Z","title":"The age of extremely red and massive galaxies at very high redshift"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1111.2726","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":"sha256:59fc5c4f92032c157c6f95dd6097d9c0f75180e9ec6fb694ebd559e920a4dd9d","target":"record","created_at":"2026-05-18T01:59:40Z","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":"a1b0c6f39467b73769cc95a8547b3df396ae17366f2071326fc08fa87a682304","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2011-11-11T12:55:39Z","title_canon_sha256":"08f608170d851e5c4b55e2da6fdb8a4504cd86c6e358eb36c13a87513328e764"},"schema_version":"1.0","source":{"id":"1111.2726","kind":"arxiv","version":2}},"canonical_sha256":"0b285bbbe2f7a26ff0c7d69dcf3261e8aa328fcb6cac06d529a7dc4095fdcfc5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0b285bbbe2f7a26ff0c7d69dcf3261e8aa328fcb6cac06d529a7dc4095fdcfc5","first_computed_at":"2026-05-18T01:59:40.226626Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:59:40.226626Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"mC/nhU2HQYXty3dJW2jOnuuzqqNDKkhmqnkfVDTDLwB+yr7K/Zy6ZaFBYryFxQk2R9xjKPCqzPEi8hz6cNPdAA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:59:40.227290Z","signed_message":"canonical_sha256_bytes"},"source_id":"1111.2726","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:59fc5c4f92032c157c6f95dd6097d9c0f75180e9ec6fb694ebd559e920a4dd9d","sha256:e45f53263fd087a64903c6e158b8f4864c26aac59fd281f129b95b0c4e44d051"],"state_sha256":"69a93a1a5ef81ad581e26fc9171eee553b7072ca4e55cd7600b465da536f0161"}