{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:A7YSRUFBYD2OQJ5AXOGOKUIO3G","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":"1e9a92bae8bf9e24f3e0eae9f709dbd757cbb67cf498d713e83aaf0c54bba822","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-11-21T21:00:07Z","title_canon_sha256":"27b92af43908fad4e93b8d33725f4edd96f8e9a23422407f0b206cf9f2db8851"},"schema_version":"1.0","source":{"id":"1611.07040","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1611.07040","created_at":"2026-05-18T00:52:37Z"},{"alias_kind":"arxiv_version","alias_value":"1611.07040v1","created_at":"2026-05-18T00:52:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1611.07040","created_at":"2026-05-18T00:52:37Z"},{"alias_kind":"pith_short_12","alias_value":"A7YSRUFBYD2O","created_at":"2026-05-18T12:30:04Z"},{"alias_kind":"pith_short_16","alias_value":"A7YSRUFBYD2OQJ5A","created_at":"2026-05-18T12:30:04Z"},{"alias_kind":"pith_short_8","alias_value":"A7YSRUFB","created_at":"2026-05-18T12:30:04Z"}],"graph_snapshots":[{"event_id":"sha256:338dbc78747d9723133cd6686cda4025fb64babd7cc34e98697f34965c331160","target":"graph","created_at":"2026-05-18T00:52:37Z","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 investigate star formation in DLSCL J0916.2+2953, a dissociative merger of two clusters at z=0.53 that has progressed $1.1^{+1.3}_{-0.4}$ Gyr since first pass-through. We attempt to reveal the effects a collision may have had on the evolution of the cluster galaxies by tracing their star formation history. We probe current and recent activity to identify a possible star formation event at the time of the merger using EW(Hd), EW([OII]), and D$_{n}$4000 measured from the composite spectra of 64 cluster and 153 coeval field galaxies. We supplement $Keck$ DEIMOS spectra with DLS and $HST$ imagi","authors_text":"A. S. Mansheim, B. C. Lemaux, D. Wittman, L. M. Lubin, S. Schmidt, W. A. Dawson","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-11-21T21:00:07Z","title":"Star Formation In The Cluster Merger DLSCL J0916.2+2953"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1611.07040","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:ca5465e00d711820d6b546bc204094392b0c19640dd20345d4a2925e1b86ecaa","target":"record","created_at":"2026-05-18T00:52:37Z","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":"1e9a92bae8bf9e24f3e0eae9f709dbd757cbb67cf498d713e83aaf0c54bba822","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-11-21T21:00:07Z","title_canon_sha256":"27b92af43908fad4e93b8d33725f4edd96f8e9a23422407f0b206cf9f2db8851"},"schema_version":"1.0","source":{"id":"1611.07040","kind":"arxiv","version":1}},"canonical_sha256":"07f128d0a1c0f4e827a0bb8ce5510ed9a72c0c2b2c13af6877b45b361dbbf2c7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"07f128d0a1c0f4e827a0bb8ce5510ed9a72c0c2b2c13af6877b45b361dbbf2c7","first_computed_at":"2026-05-18T00:52:37.761689Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:52:37.761689Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"1XzsFtFD/cNdlp+3a/XMzrg9XWQ7OwO5BC43urJFgW5Xwg+VcH5ygmGJYAux8neLUhFf+Mx3whWxKJtNslUuCw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:52:37.762245Z","signed_message":"canonical_sha256_bytes"},"source_id":"1611.07040","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ca5465e00d711820d6b546bc204094392b0c19640dd20345d4a2925e1b86ecaa","sha256:338dbc78747d9723133cd6686cda4025fb64babd7cc34e98697f34965c331160"],"state_sha256":"ff819e9d77e4a01912e395f772d1432057657eb9c4b84486f53eeae45182e3d6"}