{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:ZG27BZHQ44MHOPSMY72SG2SRDB","short_pith_number":"pith:ZG27BZHQ","canonical_record":{"source":{"id":"1311.7052","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-11-27T17:55:19Z","cross_cats_sorted":[],"title_canon_sha256":"cf1e55cac5a052fa42ddbf1d3c3e423e31531a36f2d90a77dbf7b1ac27c90dc6","abstract_canon_sha256":"c1dc552ef81cca39f1b2f8dce363b64e74fee1a9c30e65a88ee9ab48667de3b4"},"schema_version":"1.0"},"canonical_sha256":"c9b5f0e4f0e718773e4cc7f5236a51186aeb001169e9d200c37b02ca78ca6397","source":{"kind":"arxiv","id":"1311.7052","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1311.7052","created_at":"2026-05-18T01:46:05Z"},{"alias_kind":"arxiv_version","alias_value":"1311.7052v1","created_at":"2026-05-18T01:46:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1311.7052","created_at":"2026-05-18T01:46:05Z"},{"alias_kind":"pith_short_12","alias_value":"ZG27BZHQ44MH","created_at":"2026-05-18T12:28:09Z"},{"alias_kind":"pith_short_16","alias_value":"ZG27BZHQ44MHOPSM","created_at":"2026-05-18T12:28:09Z"},{"alias_kind":"pith_short_8","alias_value":"ZG27BZHQ","created_at":"2026-05-18T12:28:09Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:ZG27BZHQ44MHOPSMY72SG2SRDB","target":"record","payload":{"canonical_record":{"source":{"id":"1311.7052","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-11-27T17:55:19Z","cross_cats_sorted":[],"title_canon_sha256":"cf1e55cac5a052fa42ddbf1d3c3e423e31531a36f2d90a77dbf7b1ac27c90dc6","abstract_canon_sha256":"c1dc552ef81cca39f1b2f8dce363b64e74fee1a9c30e65a88ee9ab48667de3b4"},"schema_version":"1.0"},"canonical_sha256":"c9b5f0e4f0e718773e4cc7f5236a51186aeb001169e9d200c37b02ca78ca6397","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:46:05.523613Z","signature_b64":"Hanoa2QnXbfduB0i/2m6Lg9yGxUXJ+Yh8531ObdkgFOap4K5FCkFzENwdLWcGC5gmE1iPlV6F5Eqh+QnASHzAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c9b5f0e4f0e718773e4cc7f5236a51186aeb001169e9d200c37b02ca78ca6397","last_reissued_at":"2026-05-18T01:46:05.523154Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:46:05.523154Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1311.7052","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":"2026-05-18T01:46:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"F8jvRWbzwT7hZ7VgHOkRCdnyPdrEeKOH20N1iN5Q0ppfofT5O2n3aIRn/o+jT/ypGmDEK3mX1GrD6pohcOkDDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T15:29:28.042761Z"},"content_sha256":"2e25f41943b14c6d033ceabd0a51d9b6ccd98faf85b5d979645ef8140f7657d0","schema_version":"1.0","event_id":"sha256:2e25f41943b14c6d033ceabd0a51d9b6ccd98faf85b5d979645ef8140f7657d0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:ZG27BZHQ44MHOPSMY72SG2SRDB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A characteristic oxygen abundance gradient in galaxy disks unveiled with CALIFA","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"A. de Lorenzo-Caceres, A. Gil de Paz, A. I. Diaz, \\'A. R. Lopez-Sanchez, B. Garcia-Lorenzo, B. Husemann, B. Jungwiert, C. Cortijo-Ferrero, C. J. Walcher, D. Mast, D. Miralles-Caballero, E. Perez, F. F. Rosales-Ortega, G. van de Ven, I. Marquez, J. Barrera-Ballesteros, J. Bland-Hawthorn, J. Falcon-Barroso, J. Iglesias-Paramo, J. Mendez-Abreu, J. M. Gomes, J. M. Vilchez, K. Jahnke, L. Galbany, Lucie Jilkova, L. Wisotzki, M. A. Mendoza, M. Lyubenova, M. Molla, P. Papaderos, P. Sanchez-Blazquez, R. A. Marino, R. Cid Fernandes, R. Garcia-Benito, R. Gonzalez Delgado, S. Ellis, S. F. Sanchez, the CALIFA collaboration","submitted_at":"2013-11-27T17:55:19Z","abstract_excerpt":"We present the largest and most homogeneous catalog of HII regions and associations compiled so far. The catalog comprises more than 7000 ionized regions, extracted from 306 galaxies observed by the CALIFA survey. We describe the procedures used to detect, select, and analyse the spectroscopic properties of these ionized regions. In the current study we focus on the characterization of the radial gradient of the oxygen abundance in the ionized gas, based on the study of the deprojected distribution of HII regions. We found that all galaxies without clear evidence of an interaction present a co"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1311.7052","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":"2026-05-18T01:46:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jKMHVxYahr1KwHHRax1VnSrUaeNF5AABaCKRQEo0JhBqZDnEwfjoIlol91ba2s0Ewxr4it5aX1s13EX5eOawCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T15:29:28.043149Z"},"content_sha256":"a33a77c1d039483899025eb02298e1c40b208ca57a64e5391b8bcf16f9583724","schema_version":"1.0","event_id":"sha256:a33a77c1d039483899025eb02298e1c40b208ca57a64e5391b8bcf16f9583724"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZG27BZHQ44MHOPSMY72SG2SRDB/bundle.json","state_url":"https://pith.science/pith/ZG27BZHQ44MHOPSMY72SG2SRDB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZG27BZHQ44MHOPSMY72SG2SRDB/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":"2026-05-27T15:29:28Z","links":{"resolver":"https://pith.science/pith/ZG27BZHQ44MHOPSMY72SG2SRDB","bundle":"https://pith.science/pith/ZG27BZHQ44MHOPSMY72SG2SRDB/bundle.json","state":"https://pith.science/pith/ZG27BZHQ44MHOPSMY72SG2SRDB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZG27BZHQ44MHOPSMY72SG2SRDB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:ZG27BZHQ44MHOPSMY72SG2SRDB","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":"c1dc552ef81cca39f1b2f8dce363b64e74fee1a9c30e65a88ee9ab48667de3b4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-11-27T17:55:19Z","title_canon_sha256":"cf1e55cac5a052fa42ddbf1d3c3e423e31531a36f2d90a77dbf7b1ac27c90dc6"},"schema_version":"1.0","source":{"id":"1311.7052","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1311.7052","created_at":"2026-05-18T01:46:05Z"},{"alias_kind":"arxiv_version","alias_value":"1311.7052v1","created_at":"2026-05-18T01:46:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1311.7052","created_at":"2026-05-18T01:46:05Z"},{"alias_kind":"pith_short_12","alias_value":"ZG27BZHQ44MH","created_at":"2026-05-18T12:28:09Z"},{"alias_kind":"pith_short_16","alias_value":"ZG27BZHQ44MHOPSM","created_at":"2026-05-18T12:28:09Z"},{"alias_kind":"pith_short_8","alias_value":"ZG27BZHQ","created_at":"2026-05-18T12:28:09Z"}],"graph_snapshots":[{"event_id":"sha256:a33a77c1d039483899025eb02298e1c40b208ca57a64e5391b8bcf16f9583724","target":"graph","created_at":"2026-05-18T01:46:05Z","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 the largest and most homogeneous catalog of HII regions and associations compiled so far. The catalog comprises more than 7000 ionized regions, extracted from 306 galaxies observed by the CALIFA survey. We describe the procedures used to detect, select, and analyse the spectroscopic properties of these ionized regions. In the current study we focus on the characterization of the radial gradient of the oxygen abundance in the ionized gas, based on the study of the deprojected distribution of HII regions. We found that all galaxies without clear evidence of an interaction present a co","authors_text":"A. de Lorenzo-Caceres, A. Gil de Paz, A. I. Diaz, \\'A. R. Lopez-Sanchez, B. Garcia-Lorenzo, B. Husemann, B. Jungwiert, C. Cortijo-Ferrero, C. J. Walcher, D. Mast, D. Miralles-Caballero, E. Perez, F. F. Rosales-Ortega, G. van de Ven, I. Marquez, J. Barrera-Ballesteros, J. Bland-Hawthorn, J. Falcon-Barroso, J. Iglesias-Paramo, J. Mendez-Abreu, J. M. Gomes, J. M. Vilchez, K. Jahnke, L. Galbany, Lucie Jilkova, L. Wisotzki, M. A. Mendoza, M. Lyubenova, M. Molla, P. Papaderos, P. Sanchez-Blazquez, R. A. Marino, R. Cid Fernandes, R. Garcia-Benito, R. Gonzalez Delgado, S. Ellis, S. F. Sanchez, the CALIFA collaboration","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-11-27T17:55:19Z","title":"A characteristic oxygen abundance gradient in galaxy disks unveiled with CALIFA"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1311.7052","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":"sha256:2e25f41943b14c6d033ceabd0a51d9b6ccd98faf85b5d979645ef8140f7657d0","target":"record","created_at":"2026-05-18T01:46:05Z","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":"c1dc552ef81cca39f1b2f8dce363b64e74fee1a9c30e65a88ee9ab48667de3b4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-11-27T17:55:19Z","title_canon_sha256":"cf1e55cac5a052fa42ddbf1d3c3e423e31531a36f2d90a77dbf7b1ac27c90dc6"},"schema_version":"1.0","source":{"id":"1311.7052","kind":"arxiv","version":1}},"canonical_sha256":"c9b5f0e4f0e718773e4cc7f5236a51186aeb001169e9d200c37b02ca78ca6397","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c9b5f0e4f0e718773e4cc7f5236a51186aeb001169e9d200c37b02ca78ca6397","first_computed_at":"2026-05-18T01:46:05.523154Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:46:05.523154Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Hanoa2QnXbfduB0i/2m6Lg9yGxUXJ+Yh8531ObdkgFOap4K5FCkFzENwdLWcGC5gmE1iPlV6F5Eqh+QnASHzAg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:46:05.523613Z","signed_message":"canonical_sha256_bytes"},"source_id":"1311.7052","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2e25f41943b14c6d033ceabd0a51d9b6ccd98faf85b5d979645ef8140f7657d0","sha256:a33a77c1d039483899025eb02298e1c40b208ca57a64e5391b8bcf16f9583724"],"state_sha256":"2478b63f6ef941265c266ed0781d5f23904c64c92a502b1fc4a6f3d49ae7590e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SBj7InFaWApvjhx7ULHA8+hBb09O671cb5Da39D6BKC5BjY+2duH/hwbR0tVabnup4ZckS9JbeyEH9pi9pUWDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T15:29:28.045549Z","bundle_sha256":"beabd85715798754cc6709eccf86e346c3a2810c6873b5aed85b56a624b22d6c"}}