{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:MBZ2U2BIR3DEFAOC7LGGVSGXSM","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":"fbd6e44c1eb36b81807e2db7a977050ae2392287aa242c55cb74974cd4771e66","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-08-05T20:06:07Z","title_canon_sha256":"ad7883ce67653ac1dcacabd0be2220807e4f6ee1db2a0e6d0ac865dfe4fa0575"},"schema_version":"1.0","source":{"id":"0908.0739","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0908.0739","created_at":"2026-05-18T02:12:44Z"},{"alias_kind":"arxiv_version","alias_value":"0908.0739v2","created_at":"2026-05-18T02:12:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0908.0739","created_at":"2026-05-18T02:12:44Z"},{"alias_kind":"pith_short_12","alias_value":"MBZ2U2BIR3DE","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_16","alias_value":"MBZ2U2BIR3DEFAOC","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_8","alias_value":"MBZ2U2BI","created_at":"2026-05-18T12:26:00Z"}],"graph_snapshots":[{"event_id":"sha256:f8ca8317a18356e3395e6a4a0c2040dde66a52ac24434eead0a2dbcd00d4d194","target":"graph","created_at":"2026-05-18T02:12:44Z","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":"Using HST/ACS slitless grism spectra from the PEARS program, we study the stellar populations of morphologically selected early-type galaxies in the GOODS North and South fields. The sample - extracted from a visual classification of the (v2.0) HST/ACS images and restricted to redshifts z>0.4 - comprises 228 galaxies (F775W<24 ABmag) out to z~1.3 over 320 arcmin2, with a median redshift zM=0.75. This work significantly increases our previous sample from the GRAPES survey in the HUDF (18 galaxies over ~11 arcmin2; Pasquali et al. 2006b). The grism data allow us to separate the sample into `red'","authors_text":"(2) MPIA, (3) ASU, (4) STSCI, (5) ARI, (6) CEA Saclay, (7) UC Riverside), Anna Pasquali (2), Anton M. Koekemoer (4), Emanuele Daddi (6), Heidelberg, Ignacio Ferreras (1), James Rhoads (3), Nimish P. Hathi (7) ((1) MSSL-UCL, Nino Panagia (4), Norman Grogin (4), Nor Pirzkal (4), Rogier Windhorst (3), Sangeeta Malhotra (3), Seth Cohen (3), Thorsten Lisker (5)","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-08-05T20:06:07Z","title":"Early-type galaxies in the PEARS survey: Probing the stellar populations at moderate redshift"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0908.0739","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:e755ae433c37cf1c598798fe1f79750a538b3d1d13f358b538b790342ec262ba","target":"record","created_at":"2026-05-18T02:12:44Z","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":"fbd6e44c1eb36b81807e2db7a977050ae2392287aa242c55cb74974cd4771e66","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-08-05T20:06:07Z","title_canon_sha256":"ad7883ce67653ac1dcacabd0be2220807e4f6ee1db2a0e6d0ac865dfe4fa0575"},"schema_version":"1.0","source":{"id":"0908.0739","kind":"arxiv","version":2}},"canonical_sha256":"6073aa68288ec64281c2facc6ac8d7930949097ca24c040ed5f7b9c5370d2a43","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6073aa68288ec64281c2facc6ac8d7930949097ca24c040ed5f7b9c5370d2a43","first_computed_at":"2026-05-18T02:12:44.265080Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:12:44.265080Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"2uhvsE0g5t79BfKprIjqmU8KWKDfU4TtRgubLT+yF0YAoftpRlxWYSpr0IPPU3xqmcdTyLeRa4TuAaUb3R3PAw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:12:44.265790Z","signed_message":"canonical_sha256_bytes"},"source_id":"0908.0739","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e755ae433c37cf1c598798fe1f79750a538b3d1d13f358b538b790342ec262ba","sha256:f8ca8317a18356e3395e6a4a0c2040dde66a52ac24434eead0a2dbcd00d4d194"],"state_sha256":"c75c9fd2206fbd8966ae4242e66bd30023259494ac5c7f06cf5cdea8dce8432f"}