{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:GTY5HJPUWFZFTGBE6XG2E5S3LR","short_pith_number":"pith:GTY5HJPU","canonical_record":{"source":{"id":"2411.08945","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2024-11-13T19:00:00Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"a1faa94ea2f986737714781f8dcf983fa1e17e515aa8c9859aae5d041864719c","abstract_canon_sha256":"ec6ed31b977c007690ce1702489006bd9c0729a195bf883c85451fa86208536a"},"schema_version":"1.0"},"canonical_sha256":"34f1d3a5f4b172599824f5cda2765b5c58f9c0b20d247a9e36c9d7df805ce9de","source":{"kind":"arxiv","id":"2411.08945","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2411.08945","created_at":"2026-07-05T10:45:13Z"},{"alias_kind":"arxiv_version","alias_value":"2411.08945v2","created_at":"2026-07-05T10:45:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2411.08945","created_at":"2026-07-05T10:45:13Z"},{"alias_kind":"pith_short_12","alias_value":"GTY5HJPUWFZF","created_at":"2026-07-05T10:45:13Z"},{"alias_kind":"pith_short_16","alias_value":"GTY5HJPUWFZFTGBE","created_at":"2026-07-05T10:45:13Z"},{"alias_kind":"pith_short_8","alias_value":"GTY5HJPU","created_at":"2026-07-05T10:45:13Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:GTY5HJPUWFZFTGBE6XG2E5S3LR","target":"record","payload":{"canonical_record":{"source":{"id":"2411.08945","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2024-11-13T19:00:00Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"a1faa94ea2f986737714781f8dcf983fa1e17e515aa8c9859aae5d041864719c","abstract_canon_sha256":"ec6ed31b977c007690ce1702489006bd9c0729a195bf883c85451fa86208536a"},"schema_version":"1.0"},"canonical_sha256":"34f1d3a5f4b172599824f5cda2765b5c58f9c0b20d247a9e36c9d7df805ce9de","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:45:13.692978Z","signature_b64":"a7mazekzxaB0kGOH2BdBnArZE1E1ceEZV0X1djHpngQ+f4NpNgfW+OdawKux2Xa6+EVe0HrYji5CRK5RNkzeAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"34f1d3a5f4b172599824f5cda2765b5c58f9c0b20d247a9e36c9d7df805ce9de","last_reissued_at":"2026-07-05T10:45:13.692491Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:45:13.692491Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2411.08945","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T10:45:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"M1v6h25/WtRMwePqLb7FQ7Hl8/SfkIi2NVtte1KPSh6yRwIw/4ersa4LdP8si4NCvHFOmoH+uPlyOYGH/LGSAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T18:10:26.152507Z"},"content_sha256":"27f8ea2d4e745acbcc874b3c8df9e51cbd942f12a69665487797f893b9d3e30a","schema_version":"1.0","event_id":"sha256:27f8ea2d4e745acbcc874b3c8df9e51cbd942f12a69665487797f893b9d3e30a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:GTY5HJPUWFZFTGBE6XG2E5S3LR","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Evaluating quenching in cosmological simulations of galaxy formation with spectral covariance in the optical window","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.CO","authors_text":"A. Negri, C. Dalla Vecchia, I. Ferreras, J. Angthopo, O. Lahav, R. S. Somerville, Z. Sharbaf","submitted_at":"2024-11-13T19:00:00Z","abstract_excerpt":"Cosmological hydrodynamical simulations provide valuable insights on galaxy evolution when coupled with observational data. Comparisons with real galaxies are typically performed via scaling relations of the observables. Here we follow an alternative approach based on the spectral covariance in a model-independent way. We build upon previous work by Sharbaf et al. that studied the covariance of high quality SDSS continuum-subtracted spectra in a relatively narrow range of velocity dispersion ($\\sigma\\in [100,150]$\\,km\\,s$^{-1}$). Here the same analysis is applied to synthetic data from the EAG"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2411.08945","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2411.08945/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T10:45:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ImpwTsSoho7MOW1g7v0ZYtX2nPCMKxX7/PD7vZUDWQCuHp3CI4xoviIe9k87L0pnAzXs9m4/9e9qlukGRJISCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T18:10:26.153114Z"},"content_sha256":"ebed23f29e3fb125b5ea149599400596f30a90ceb72e161bebb4201ca9792294","schema_version":"1.0","event_id":"sha256:ebed23f29e3fb125b5ea149599400596f30a90ceb72e161bebb4201ca9792294"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GTY5HJPUWFZFTGBE6XG2E5S3LR/bundle.json","state_url":"https://pith.science/pith/GTY5HJPUWFZFTGBE6XG2E5S3LR/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GTY5HJPUWFZFTGBE6XG2E5S3LR/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-08-03T18:10:26Z","links":{"resolver":"https://pith.science/pith/GTY5HJPUWFZFTGBE6XG2E5S3LR","bundle":"https://pith.science/pith/GTY5HJPUWFZFTGBE6XG2E5S3LR/bundle.json","state":"https://pith.science/pith/GTY5HJPUWFZFTGBE6XG2E5S3LR/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GTY5HJPUWFZFTGBE6XG2E5S3LR/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:GTY5HJPUWFZFTGBE6XG2E5S3LR","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":"ec6ed31b977c007690ce1702489006bd9c0729a195bf883c85451fa86208536a","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2024-11-13T19:00:00Z","title_canon_sha256":"a1faa94ea2f986737714781f8dcf983fa1e17e515aa8c9859aae5d041864719c"},"schema_version":"1.0","source":{"id":"2411.08945","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2411.08945","created_at":"2026-07-05T10:45:13Z"},{"alias_kind":"arxiv_version","alias_value":"2411.08945v2","created_at":"2026-07-05T10:45:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2411.08945","created_at":"2026-07-05T10:45:13Z"},{"alias_kind":"pith_short_12","alias_value":"GTY5HJPUWFZF","created_at":"2026-07-05T10:45:13Z"},{"alias_kind":"pith_short_16","alias_value":"GTY5HJPUWFZFTGBE","created_at":"2026-07-05T10:45:13Z"},{"alias_kind":"pith_short_8","alias_value":"GTY5HJPU","created_at":"2026-07-05T10:45:13Z"}],"graph_snapshots":[{"event_id":"sha256:ebed23f29e3fb125b5ea149599400596f30a90ceb72e161bebb4201ca9792294","target":"graph","created_at":"2026-07-05T10:45:13Z","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/2411.08945/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Cosmological hydrodynamical simulations provide valuable insights on galaxy evolution when coupled with observational data. Comparisons with real galaxies are typically performed via scaling relations of the observables. Here we follow an alternative approach based on the spectral covariance in a model-independent way. We build upon previous work by Sharbaf et al. that studied the covariance of high quality SDSS continuum-subtracted spectra in a relatively narrow range of velocity dispersion ($\\sigma\\in [100,150]$\\,km\\,s$^{-1}$). Here the same analysis is applied to synthetic data from the EAG","authors_text":"A. Negri, C. Dalla Vecchia, I. Ferreras, J. Angthopo, O. Lahav, R. S. Somerville, Z. Sharbaf","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2024-11-13T19:00:00Z","title":"Evaluating quenching in cosmological simulations of galaxy formation with spectral covariance in the optical window"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2411.08945","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":"sha256:27f8ea2d4e745acbcc874b3c8df9e51cbd942f12a69665487797f893b9d3e30a","target":"record","created_at":"2026-07-05T10:45:13Z","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":"ec6ed31b977c007690ce1702489006bd9c0729a195bf883c85451fa86208536a","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2024-11-13T19:00:00Z","title_canon_sha256":"a1faa94ea2f986737714781f8dcf983fa1e17e515aa8c9859aae5d041864719c"},"schema_version":"1.0","source":{"id":"2411.08945","kind":"arxiv","version":2}},"canonical_sha256":"34f1d3a5f4b172599824f5cda2765b5c58f9c0b20d247a9e36c9d7df805ce9de","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"34f1d3a5f4b172599824f5cda2765b5c58f9c0b20d247a9e36c9d7df805ce9de","first_computed_at":"2026-07-05T10:45:13.692491Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:45:13.692491Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"a7mazekzxaB0kGOH2BdBnArZE1E1ceEZV0X1djHpngQ+f4NpNgfW+OdawKux2Xa6+EVe0HrYji5CRK5RNkzeAw==","signature_status":"signed_v1","signed_at":"2026-07-05T10:45:13.692978Z","signed_message":"canonical_sha256_bytes"},"source_id":"2411.08945","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:27f8ea2d4e745acbcc874b3c8df9e51cbd942f12a69665487797f893b9d3e30a","sha256:ebed23f29e3fb125b5ea149599400596f30a90ceb72e161bebb4201ca9792294"],"state_sha256":"06e81f6d6ff4de4b5222695dcf945b97199eeaa0ef9c3163fc1461f8177fb2f8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"H/EPoSBmR/sQ5SRQARhf4HYVEri3Tw56c/gtgIxquSI1xjzbi0MpZq64qLafWh8GBy+fz6BXutIJ4GLj1gSqAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-03T18:10:26.160898Z","bundle_sha256":"ee2b21e309afab48f3e504e33316dd57418a04771f9900e66b477c16eda74139"}}