{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:DAKEBD3XBOEPR4WC3GK5XDWTMR","short_pith_number":"pith:DAKEBD3X","canonical_record":{"source":{"id":"1207.2295","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-07-10T10:24:55Z","cross_cats_sorted":[],"title_canon_sha256":"d70741f51f6d56149dc436d43151317813d3019c44c9877867c47aadfaa21a82","abstract_canon_sha256":"34c03fd4dc3f63eb0dfebf98cafb5e1e0931025e4f5da1a78905560a39a77c29"},"schema_version":"1.0"},"canonical_sha256":"1814408f770b88f8f2c2d995db8ed3645bbbc6e64dd0c99357ecf98c0b8acc9d","source":{"kind":"arxiv","id":"1207.2295","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1207.2295","created_at":"2026-05-18T01:56:25Z"},{"alias_kind":"arxiv_version","alias_value":"1207.2295v1","created_at":"2026-05-18T01:56:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1207.2295","created_at":"2026-05-18T01:56:25Z"},{"alias_kind":"pith_short_12","alias_value":"DAKEBD3XBOEP","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_16","alias_value":"DAKEBD3XBOEPR4WC","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_8","alias_value":"DAKEBD3X","created_at":"2026-05-18T12:27:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:DAKEBD3XBOEPR4WC3GK5XDWTMR","target":"record","payload":{"canonical_record":{"source":{"id":"1207.2295","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-07-10T10:24:55Z","cross_cats_sorted":[],"title_canon_sha256":"d70741f51f6d56149dc436d43151317813d3019c44c9877867c47aadfaa21a82","abstract_canon_sha256":"34c03fd4dc3f63eb0dfebf98cafb5e1e0931025e4f5da1a78905560a39a77c29"},"schema_version":"1.0"},"canonical_sha256":"1814408f770b88f8f2c2d995db8ed3645bbbc6e64dd0c99357ecf98c0b8acc9d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:56:25.979205Z","signature_b64":"UhRTvUJnl3PMPrBiG2iKFq/n9x25yWhZUxyeyZnwmNJEAVym3Lm57PfbhNPEWFGpmipsctF+qzWpHHUaCAxKAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1814408f770b88f8f2c2d995db8ed3645bbbc6e64dd0c99357ecf98c0b8acc9d","last_reissued_at":"2026-05-18T01:56:25.978421Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:56:25.978421Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1207.2295","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:56:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CNsRj14tT/4F6+Ehs2tZoliih6EChBvZu5UxeaVdKFzlE6HAoY/biDIwfQtjBcwuAr2svSHuUmWJniLw6FZzBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T16:28:23.007126Z"},"content_sha256":"28e20c0faaa7ce5aa60c081475d8de1e069cb3797792edfca379199867f45e40","schema_version":"1.0","event_id":"sha256:28e20c0faaa7ce5aa60c081475d8de1e069cb3797792edfca379199867f45e40"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:DAKEBD3XBOEPR4WC3GK5XDWTMR","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Spatially Resolved Colors and Stellar Population Properties in Early-Type Galaxies at z ~ 1.5","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"A. Gargiulo, F. La Barbera, M. Longhetti, P. Saracco, S. Tamburri","submitted_at":"2012-07-10T10:24:55Z","abstract_excerpt":"We present F850LP-F160W color gradients for 11 early-type galaxies (ETGs) at 1.0<z_spec<1.9. Significant negative F850LP-F160W color gradients have been detected in ~70% of our sample within the effective radius R_e, the remaining 30% having a flat color profile. Extending the analysis at R>R_e we have found that the fraction of high-z ETGs with negative F850LP-F160W color gradients rises up to 100%. For each galaxy, we investigate the origin of the radial color variation with a technique based on the matching of both the spatially resolved color and the global spectral energy distribution (SE"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1207.2295","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"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":"2026-05-18T01:56:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ikGk0aWf6oFbDnetTdLlf64C3VYFX8tCnWb26YOBhvM7Jl2sSr6LrhHmoczKgyK83ZPV6tfVRMjPB2gy2F/fAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T16:28:23.007494Z"},"content_sha256":"ea9c83896f50efeea919b69da0b2dcdfd0438a92f404bcd3fedf97d21a29e781","schema_version":"1.0","event_id":"sha256:ea9c83896f50efeea919b69da0b2dcdfd0438a92f404bcd3fedf97d21a29e781"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DAKEBD3XBOEPR4WC3GK5XDWTMR/bundle.json","state_url":"https://pith.science/pith/DAKEBD3XBOEPR4WC3GK5XDWTMR/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DAKEBD3XBOEPR4WC3GK5XDWTMR/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":"2026-06-02T16:28:23Z","links":{"resolver":"https://pith.science/pith/DAKEBD3XBOEPR4WC3GK5XDWTMR","bundle":"https://pith.science/pith/DAKEBD3XBOEPR4WC3GK5XDWTMR/bundle.json","state":"https://pith.science/pith/DAKEBD3XBOEPR4WC3GK5XDWTMR/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DAKEBD3XBOEPR4WC3GK5XDWTMR/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:DAKEBD3XBOEPR4WC3GK5XDWTMR","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":"34c03fd4dc3f63eb0dfebf98cafb5e1e0931025e4f5da1a78905560a39a77c29","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-07-10T10:24:55Z","title_canon_sha256":"d70741f51f6d56149dc436d43151317813d3019c44c9877867c47aadfaa21a82"},"schema_version":"1.0","source":{"id":"1207.2295","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1207.2295","created_at":"2026-05-18T01:56:25Z"},{"alias_kind":"arxiv_version","alias_value":"1207.2295v1","created_at":"2026-05-18T01:56:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1207.2295","created_at":"2026-05-18T01:56:25Z"},{"alias_kind":"pith_short_12","alias_value":"DAKEBD3XBOEP","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_16","alias_value":"DAKEBD3XBOEPR4WC","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_8","alias_value":"DAKEBD3X","created_at":"2026-05-18T12:27:01Z"}],"graph_snapshots":[{"event_id":"sha256:ea9c83896f50efeea919b69da0b2dcdfd0438a92f404bcd3fedf97d21a29e781","target":"graph","created_at":"2026-05-18T01:56:25Z","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 F850LP-F160W color gradients for 11 early-type galaxies (ETGs) at 1.0<z_spec<1.9. Significant negative F850LP-F160W color gradients have been detected in ~70% of our sample within the effective radius R_e, the remaining 30% having a flat color profile. Extending the analysis at R>R_e we have found that the fraction of high-z ETGs with negative F850LP-F160W color gradients rises up to 100%. For each galaxy, we investigate the origin of the radial color variation with a technique based on the matching of both the spatially resolved color and the global spectral energy distribution (SE","authors_text":"A. Gargiulo, F. La Barbera, M. Longhetti, P. Saracco, S. Tamburri","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-07-10T10:24:55Z","title":"Spatially Resolved Colors and Stellar Population Properties in Early-Type Galaxies at z ~ 1.5"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1207.2295","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":"sha256:28e20c0faaa7ce5aa60c081475d8de1e069cb3797792edfca379199867f45e40","target":"record","created_at":"2026-05-18T01:56:25Z","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":"34c03fd4dc3f63eb0dfebf98cafb5e1e0931025e4f5da1a78905560a39a77c29","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-07-10T10:24:55Z","title_canon_sha256":"d70741f51f6d56149dc436d43151317813d3019c44c9877867c47aadfaa21a82"},"schema_version":"1.0","source":{"id":"1207.2295","kind":"arxiv","version":1}},"canonical_sha256":"1814408f770b88f8f2c2d995db8ed3645bbbc6e64dd0c99357ecf98c0b8acc9d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1814408f770b88f8f2c2d995db8ed3645bbbc6e64dd0c99357ecf98c0b8acc9d","first_computed_at":"2026-05-18T01:56:25.978421Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:56:25.978421Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"UhRTvUJnl3PMPrBiG2iKFq/n9x25yWhZUxyeyZnwmNJEAVym3Lm57PfbhNPEWFGpmipsctF+qzWpHHUaCAxKAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:56:25.979205Z","signed_message":"canonical_sha256_bytes"},"source_id":"1207.2295","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:28e20c0faaa7ce5aa60c081475d8de1e069cb3797792edfca379199867f45e40","sha256:ea9c83896f50efeea919b69da0b2dcdfd0438a92f404bcd3fedf97d21a29e781"],"state_sha256":"2545163bf4ddd8975197d45cc388e8a67413276e6c5e9dec4222ea8016eb8c25"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LPU+h4OExhzeUb0B1hKIRPR7vdUvgPgHjpMO/rk2wunTk4c6IHfC9dLp//lwrpiU2icAO9IokdfRxEIO/K2fCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T16:28:23.009387Z","bundle_sha256":"fdb4d0389a4f5e20ed0a58bde093ee728d3423707d6ea3758f0b4b77b08076ac"}}