{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:Z5DDTEGDGRE7WYEOJPHU22HUVR","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":"b17e235de7b7f2450344e9ba030df33d456b13be546c95d0ef3665ab148c40e9","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-07-22T20:11:41Z","title_canon_sha256":"ef18cf4692d3b0c9db4ed673faf8c12a0f23d73a5924de52fa06212066568dbf"},"schema_version":"1.0","source":{"id":"0907.3922","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0907.3922","created_at":"2026-05-18T02:12:54Z"},{"alias_kind":"arxiv_version","alias_value":"0907.3922v1","created_at":"2026-05-18T02:12:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0907.3922","created_at":"2026-05-18T02:12:54Z"},{"alias_kind":"pith_short_12","alias_value":"Z5DDTEGDGRE7","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_16","alias_value":"Z5DDTEGDGRE7WYEO","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_8","alias_value":"Z5DDTEGD","created_at":"2026-05-18T12:26:02Z"}],"graph_snapshots":[{"event_id":"sha256:a040f8043b825b685d785ef1d50f7deb4017c17f0f951a365b6a80cdb198e602","target":"graph","created_at":"2026-05-18T02:12:54Z","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 present new deep spectroscopic observations of 0.05--0.5 L_* galaxies in one cluster (cl1232.5-1250) drawn from the ESO Distant Cluster Survey (EDisCS) sample, at z = 0.54. The new data extend the spectroscopy already available for this cluster by about 1 magnitude. The cluster has a large fraction of passive galaxies and exhibits a well defined and relatively tight colour-magnitude relation. Among spectroscopic members, only six galaxies are classified as `post-starburst' (k+a). For another EDisCS cluster at similar redshift and with as deep spectroscopy, no member is found to have a k+a s","authors_text":"Bianca M. Poggianti, Bo Milvang-Jensen, Claire Halliday, Dennis Zaritsky, Gabriella De Lucia, Ian Smail, Stefan Noll","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-07-22T20:11:41Z","title":"On the role of the post-starburst phase in the build-up of the red-sequence of intermediate redshift clusters"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0907.3922","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":"sha256:82b1384cd883258e5205501f59875ec971241f71a239413dcf0ed270c317652f","target":"record","created_at":"2026-05-18T02:12:54Z","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":"b17e235de7b7f2450344e9ba030df33d456b13be546c95d0ef3665ab148c40e9","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-07-22T20:11:41Z","title_canon_sha256":"ef18cf4692d3b0c9db4ed673faf8c12a0f23d73a5924de52fa06212066568dbf"},"schema_version":"1.0","source":{"id":"0907.3922","kind":"arxiv","version":1}},"canonical_sha256":"cf463990c33449fb608e4bcf4d68f4ac5dbd86349f32c0107c6000f5088f498c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cf463990c33449fb608e4bcf4d68f4ac5dbd86349f32c0107c6000f5088f498c","first_computed_at":"2026-05-18T02:12:54.522843Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:12:54.522843Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Ns0hIHm8HAU6scrcqoGeHUc8i49GOkNFAHhObsgtpC8/5lUlN8zeicYerYKK3bWWHt/fWRsCutpd0OZWpVBJBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:12:54.523381Z","signed_message":"canonical_sha256_bytes"},"source_id":"0907.3922","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:82b1384cd883258e5205501f59875ec971241f71a239413dcf0ed270c317652f","sha256:a040f8043b825b685d785ef1d50f7deb4017c17f0f951a365b6a80cdb198e602"],"state_sha256":"ef734c3a28d1968e18b437a232965a22e238600bc384223e0afdac0b6e66bdba"}