{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:6LQV2XHOVOCBDXQDGMSCZUJQLZ","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":"28f99d00b31f07e5e717ed9163d82a3492e034b07708a80e95763caeaf742395","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-09-18T01:40:21Z","title_canon_sha256":"20c76215adf7677e73f09ff35c79a878bb2f1b5ec8c27c39f717c3d9ca0de1ac"},"schema_version":"1.0","source":{"id":"2109.08798","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2109.08798","created_at":"2026-07-05T03:18:22Z"},{"alias_kind":"arxiv_version","alias_value":"2109.08798v2","created_at":"2026-07-05T03:18:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2109.08798","created_at":"2026-07-05T03:18:22Z"},{"alias_kind":"pith_short_12","alias_value":"6LQV2XHOVOCB","created_at":"2026-07-05T03:18:22Z"},{"alias_kind":"pith_short_16","alias_value":"6LQV2XHOVOCBDXQD","created_at":"2026-07-05T03:18:22Z"},{"alias_kind":"pith_short_8","alias_value":"6LQV2XHO","created_at":"2026-07-05T03:18:22Z"}],"graph_snapshots":[{"event_id":"sha256:2b194080f4e7cd6fe1bf18a27d930051209293d47c0b3b663d9dd16ade8d221b","target":"graph","created_at":"2026-07-05T03:18:22Z","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/2109.08798/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We report the discovery of eMACSJ0252.4$-$2100 (eMACSJ0252), a massive and highly evolved galaxy cluster at $z=0.703$. Our analysis of Hubble Space Telescope imaging and VLT/MUSE and Keck/DEIMOS spectroscopy of the system finds a high velocity dispersion of 1020$^{+180}_{-190}$ km s$^{-1}$ and a high (if tentative) X-ray luminosity of $(1.2\\pm 0.4)\\times10^{45}$ erg s$^{-1}$ (0.1$-$2.4 keV). As extreme is the system's brightest cluster galaxy, a giant cD galaxy that forms stars at a rate of between 85 and 300 M$_\\odot$ yr$^{-1}$ and features an extended halo of diffuse [OII] emission, as well ","authors_text":"Alastair Edge, Anton Koekemoer, Harald Ebeling, Ian Smail, Johan Richard, Lukas Zalesky","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-09-18T01:40:21Z","title":"An extreme case of galaxy and cluster co-evolution at $z$=0.7"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2109.08798","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:ce861bcf5b2c20617106874b64663f4e622d31aea78ed21f394f01b589646b3a","target":"record","created_at":"2026-07-05T03:18:22Z","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":"28f99d00b31f07e5e717ed9163d82a3492e034b07708a80e95763caeaf742395","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-09-18T01:40:21Z","title_canon_sha256":"20c76215adf7677e73f09ff35c79a878bb2f1b5ec8c27c39f717c3d9ca0de1ac"},"schema_version":"1.0","source":{"id":"2109.08798","kind":"arxiv","version":2}},"canonical_sha256":"f2e15d5ceeab8411de0333242cd1305e61a714669791ab5c4f6b82090dc3356b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f2e15d5ceeab8411de0333242cd1305e61a714669791ab5c4f6b82090dc3356b","first_computed_at":"2026-07-05T03:18:22.211367Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:18:22.211367Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"m3uudY1563oq+ZX6DLFb68BFjU3z83l6FWRVKUdEXK43yWQr6Lbo87ei64jdypc0SL/N121KESKSbGTvd5JyDQ==","signature_status":"signed_v1","signed_at":"2026-07-05T03:18:22.211857Z","signed_message":"canonical_sha256_bytes"},"source_id":"2109.08798","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ce861bcf5b2c20617106874b64663f4e622d31aea78ed21f394f01b589646b3a","sha256:2b194080f4e7cd6fe1bf18a27d930051209293d47c0b3b663d9dd16ade8d221b"],"state_sha256":"d93c0b3395411cbd32667f7a9e00c08c0377adee1e2fc811984f5f87ffedc980"}