{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:FYYWQWMKOUBE4IHYQO55PAD6FS","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":"fac65d7e88373f91c4a3ca16cc8c1b570378aec4033c42db4090d258f74770ff","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-03-21T16:19:17Z","title_canon_sha256":"489da64d2402e8caf5fa63ade6e1207017e6689500266d90ba3350a1c7a62dc4"},"schema_version":"1.0","source":{"id":"1203.4775","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1203.4775","created_at":"2026-05-18T01:58:04Z"},{"alias_kind":"arxiv_version","alias_value":"1203.4775v1","created_at":"2026-05-18T01:58:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1203.4775","created_at":"2026-05-18T01:58:04Z"},{"alias_kind":"pith_short_12","alias_value":"FYYWQWMKOUBE","created_at":"2026-05-18T12:27:06Z"},{"alias_kind":"pith_short_16","alias_value":"FYYWQWMKOUBE4IHY","created_at":"2026-05-18T12:27:06Z"},{"alias_kind":"pith_short_8","alias_value":"FYYWQWMK","created_at":"2026-05-18T12:27:06Z"}],"graph_snapshots":[{"event_id":"sha256:d97d87c37c2232ecc6e14f21ba65cd110e6cc0cc2686a460a22c7e6a6a7dccec","target":"graph","created_at":"2026-05-18T01:58:04Z","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":"Galaxies are found to obey scaling relations between a number of observables. These relations follow different trends at the low- and the high-mass ends. The processes driving the curvature of scaling relations remain uncertain. In this letter, we focus on the specific family of early-type galaxies, deriving the star formation histories of a complete sample of visually classified galaxies from SDSS-DR7 over the redshift range 0.01<z<0.025, covering a stellar mass interval from 10^9 to 3 x 10^11 Msun. Our sample features the characteristic \"knee\" in the surface brightness vs. mass distribution ","authors_text":"Francesco La Barbera, Ignacio de la Rosa, Ignacio Ferreras, Marina Trevisan, Reinaldo de Carvalho","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-03-21T16:19:17Z","title":"Constraints on feedback processes during the formation of early-type galaxies"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1203.4775","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:a12172ca606ae0950c302f3dc90d81b576185e85e36e6559c95cdd2362da0272","target":"record","created_at":"2026-05-18T01:58:04Z","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":"fac65d7e88373f91c4a3ca16cc8c1b570378aec4033c42db4090d258f74770ff","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-03-21T16:19:17Z","title_canon_sha256":"489da64d2402e8caf5fa63ade6e1207017e6689500266d90ba3350a1c7a62dc4"},"schema_version":"1.0","source":{"id":"1203.4775","kind":"arxiv","version":1}},"canonical_sha256":"2e3168598a75024e20f883bbd7807e2c9c62cd0471dada81d9075776c2b5b1d4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2e3168598a75024e20f883bbd7807e2c9c62cd0471dada81d9075776c2b5b1d4","first_computed_at":"2026-05-18T01:58:04.960148Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:58:04.960148Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"bQ2gy+aRBFuD/2OueFXKylkYiAnrziR25xGLHWqC9n6bZt3UN3DAiuh7DhdSJPfINm8GyQGVQggCbgB8nHizCg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:58:04.960608Z","signed_message":"canonical_sha256_bytes"},"source_id":"1203.4775","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a12172ca606ae0950c302f3dc90d81b576185e85e36e6559c95cdd2362da0272","sha256:d97d87c37c2232ecc6e14f21ba65cd110e6cc0cc2686a460a22c7e6a6a7dccec"],"state_sha256":"707a726de5bb39d10cf335a72d6ac91c5af95c698e62f17c9e608f6c3fc994da"}