{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:GTT52UXM4OLTGOTKLYXRIPTTHY","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":"0a97a0f6507da947c2737fe5e52f5cc501b95c58caf7906239d5d3bfbe58f79c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-07-07T20:00:02Z","title_canon_sha256":"9e285772b30be2cc4d41121e22fa16e8318c62f7c12c7ffcf6bfcc48158a2950"},"schema_version":"1.0","source":{"id":"1607.02143","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1607.02143","created_at":"2026-05-18T00:53:59Z"},{"alias_kind":"arxiv_version","alias_value":"1607.02143v2","created_at":"2026-05-18T00:53:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1607.02143","created_at":"2026-05-18T00:53:59Z"},{"alias_kind":"pith_short_12","alias_value":"GTT52UXM4OLT","created_at":"2026-05-18T12:30:19Z"},{"alias_kind":"pith_short_16","alias_value":"GTT52UXM4OLTGOTK","created_at":"2026-05-18T12:30:19Z"},{"alias_kind":"pith_short_8","alias_value":"GTT52UXM","created_at":"2026-05-18T12:30:19Z"}],"graph_snapshots":[{"event_id":"sha256:57c7526c1fa13586a7285d3faa05a724527613703fe1df801fb27d64c7abe1fc","target":"graph","created_at":"2026-05-18T00:53:59Z","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 coarse but robust star formation histories (SFHs) derived from spectro-photometric data of the Carnegie-Spitzer-IMACS Survey, for 22,494 galaxies at 0.3<z<0.9 with stellar masses of 10^9 Msun to 10^12 Msun. Our study moves beyond \"average\" SFHs and distribution functions of specific star formation rates (sSFRs) to individually measured SFHs for tens of thousands of galaxies. By comparing star formation rates (SFRs) with timescales of 10^10, 10^9, and 10^8 years, we find a wide diversity of SFHs: 'old galaxies' that formed most or all of their stars early; galaxies that formed stars ","authors_text":"(2) UCLA, (3) U. Chicago/KICP, (4) Padova Astronomical Observatory/INAF, (5) U. Melbourne, (6) USAID), Alan Dressler (1), Augustus Oemler, Benedetta Vulcani (5), Bianca M. Poggianti (4), Daniel D. Kelson (1), John S. Mulchaey (1), Jr. (1), Louis E. Abramson (2), Michael D. Gladders (3), Patrick J. McCarthy (1) ((1) Carnegie Observatories, Rik J. Williams (6), Stephen A. Shectman (1)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-07-07T20:00:02Z","title":"Demonstrating Diversity in Star Formation Histories with the CSI Survey"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1607.02143","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:ed60c065377236ddb2e842bbaea009e1e24c6463940c52041d4486b9d90ebf38","target":"record","created_at":"2026-05-18T00:53:59Z","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":"0a97a0f6507da947c2737fe5e52f5cc501b95c58caf7906239d5d3bfbe58f79c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-07-07T20:00:02Z","title_canon_sha256":"9e285772b30be2cc4d41121e22fa16e8318c62f7c12c7ffcf6bfcc48158a2950"},"schema_version":"1.0","source":{"id":"1607.02143","kind":"arxiv","version":2}},"canonical_sha256":"34e7dd52ece397333a6a5e2f143e733e19f21b25c9b09459664d3e416bf36f61","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"34e7dd52ece397333a6a5e2f143e733e19f21b25c9b09459664d3e416bf36f61","first_computed_at":"2026-05-18T00:53:59.768221Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:53:59.768221Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"SFicvrT8TIgTJe1dlslxIRiAE5xOy2jzcvzpiHl8UGsAYejkN8FAFEfN9RbVkA8fDkSlrWxIzC/buc4LVYKoDw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:53:59.768960Z","signed_message":"canonical_sha256_bytes"},"source_id":"1607.02143","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ed60c065377236ddb2e842bbaea009e1e24c6463940c52041d4486b9d90ebf38","sha256:57c7526c1fa13586a7285d3faa05a724527613703fe1df801fb27d64c7abe1fc"],"state_sha256":"4cde578bc6dcaeb7025a886f50564f4f1ea9d0535234c695c469a78223341f01"}