{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:ME2L5AOGTBO7GBKJ5HDPTTVVUB","short_pith_number":"pith:ME2L5AOG","canonical_record":{"source":{"id":"1406.5911","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-06-23T14:08:54Z","cross_cats_sorted":[],"title_canon_sha256":"c8c14ff268a50d84546db6760a96e75455f3a1399fb69e416a629d7963598fd1","abstract_canon_sha256":"0f178307dd6a7c2d2c652fd060f8acdad9001387c7ca93f5a827e9139724b843"},"schema_version":"1.0"},"canonical_sha256":"6134be81c6985df30549e9c6f9ceb5a04549f0f7c2a9fafe894c897c5fb19093","source":{"kind":"arxiv","id":"1406.5911","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1406.5911","created_at":"2026-05-18T01:42:51Z"},{"alias_kind":"arxiv_version","alias_value":"1406.5911v1","created_at":"2026-05-18T01:42:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1406.5911","created_at":"2026-05-18T01:42:51Z"},{"alias_kind":"pith_short_12","alias_value":"ME2L5AOGTBO7","created_at":"2026-05-18T12:28:38Z"},{"alias_kind":"pith_short_16","alias_value":"ME2L5AOGTBO7GBKJ","created_at":"2026-05-18T12:28:38Z"},{"alias_kind":"pith_short_8","alias_value":"ME2L5AOG","created_at":"2026-05-18T12:28:38Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:ME2L5AOGTBO7GBKJ5HDPTTVVUB","target":"record","payload":{"canonical_record":{"source":{"id":"1406.5911","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-06-23T14:08:54Z","cross_cats_sorted":[],"title_canon_sha256":"c8c14ff268a50d84546db6760a96e75455f3a1399fb69e416a629d7963598fd1","abstract_canon_sha256":"0f178307dd6a7c2d2c652fd060f8acdad9001387c7ca93f5a827e9139724b843"},"schema_version":"1.0"},"canonical_sha256":"6134be81c6985df30549e9c6f9ceb5a04549f0f7c2a9fafe894c897c5fb19093","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:42:51.597270Z","signature_b64":"xqBSU5GhzGbrnivGmHTkI7bO5q3ROQWVBkQ0JQHc6nFNZHUAk/RUCY7sfef9fvSkWxPNjcWFstvAcv+nO+0yCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6134be81c6985df30549e9c6f9ceb5a04549f0f7c2a9fafe894c897c5fb19093","last_reissued_at":"2026-05-18T01:42:51.596581Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:42:51.596581Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1406.5911","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":"2026-05-18T01:42:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YYrhqqHsnUApe2C0c971AAIk+ECwkwbXNOze88ifqrLV8Y8I+2EFpsMO9YyfOmDjV4XmuQNjTSOsWePmUj8gBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T03:45:10.532635Z"},"content_sha256":"94894a632af7c665dc2b3002f4d95af1aa40c46a20b73394973c4b8c217ab567","schema_version":"1.0","event_id":"sha256:94894a632af7c665dc2b3002f4d95af1aa40c46a20b73394973c4b8c217ab567"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:ME2L5AOGTBO7GBKJ5HDPTTVVUB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The age-metallicity relationship in the Fornax spheroidal dwarf galaxy","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Andr\\'es del Pino, Andr\\'es E. Piatti, Antonio Aparicio, Sebasti\\'an L. Hidalgo","submitted_at":"2014-06-23T14:08:54Z","abstract_excerpt":"We produce a comprehensive field star age-metallicity relationship (AMR) from the earliest epoch until ~ 1 Gyr ago for three fields in the Fornax dSph galaxy by using VI photometric data obtained with FORS1 at the VLT. We find that the innermost one does not contains dominant very old stars (age > 12 Gyr), whereas the relatively outer field does not account for representative star field populations younger than ~ 3 Gyr. When focusing on the most prominent stellar populations, we find that the derived AMRs are engraved by the evidence of a outside-in star formation process. The studied fields s"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1406.5911","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":"2026-05-18T01:42:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OwHDUjUM1PeKPqIYP7QnKjuYpYJxFzPca+jCbJDWqvsMRxYLCdB2OqhHuZh1eYspLwSRzeYnhehCOHtbjHlVCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T03:45:10.532977Z"},"content_sha256":"42b453a92f1ebc460bf971071d4c09d812ce3fe90f2ad5d531843b0eabd6d5c8","schema_version":"1.0","event_id":"sha256:42b453a92f1ebc460bf971071d4c09d812ce3fe90f2ad5d531843b0eabd6d5c8"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ME2L5AOGTBO7GBKJ5HDPTTVVUB/bundle.json","state_url":"https://pith.science/pith/ME2L5AOGTBO7GBKJ5HDPTTVVUB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ME2L5AOGTBO7GBKJ5HDPTTVVUB/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":"2026-05-31T03:45:10Z","links":{"resolver":"https://pith.science/pith/ME2L5AOGTBO7GBKJ5HDPTTVVUB","bundle":"https://pith.science/pith/ME2L5AOGTBO7GBKJ5HDPTTVVUB/bundle.json","state":"https://pith.science/pith/ME2L5AOGTBO7GBKJ5HDPTTVVUB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ME2L5AOGTBO7GBKJ5HDPTTVVUB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:ME2L5AOGTBO7GBKJ5HDPTTVVUB","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":"0f178307dd6a7c2d2c652fd060f8acdad9001387c7ca93f5a827e9139724b843","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-06-23T14:08:54Z","title_canon_sha256":"c8c14ff268a50d84546db6760a96e75455f3a1399fb69e416a629d7963598fd1"},"schema_version":"1.0","source":{"id":"1406.5911","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1406.5911","created_at":"2026-05-18T01:42:51Z"},{"alias_kind":"arxiv_version","alias_value":"1406.5911v1","created_at":"2026-05-18T01:42:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1406.5911","created_at":"2026-05-18T01:42:51Z"},{"alias_kind":"pith_short_12","alias_value":"ME2L5AOGTBO7","created_at":"2026-05-18T12:28:38Z"},{"alias_kind":"pith_short_16","alias_value":"ME2L5AOGTBO7GBKJ","created_at":"2026-05-18T12:28:38Z"},{"alias_kind":"pith_short_8","alias_value":"ME2L5AOG","created_at":"2026-05-18T12:28:38Z"}],"graph_snapshots":[{"event_id":"sha256:42b453a92f1ebc460bf971071d4c09d812ce3fe90f2ad5d531843b0eabd6d5c8","target":"graph","created_at":"2026-05-18T01:42:51Z","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 produce a comprehensive field star age-metallicity relationship (AMR) from the earliest epoch until ~ 1 Gyr ago for three fields in the Fornax dSph galaxy by using VI photometric data obtained with FORS1 at the VLT. We find that the innermost one does not contains dominant very old stars (age > 12 Gyr), whereas the relatively outer field does not account for representative star field populations younger than ~ 3 Gyr. When focusing on the most prominent stellar populations, we find that the derived AMRs are engraved by the evidence of a outside-in star formation process. The studied fields s","authors_text":"Andr\\'es del Pino, Andr\\'es E. Piatti, Antonio Aparicio, Sebasti\\'an L. Hidalgo","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-06-23T14:08:54Z","title":"The age-metallicity relationship in the Fornax spheroidal dwarf galaxy"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1406.5911","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":"sha256:94894a632af7c665dc2b3002f4d95af1aa40c46a20b73394973c4b8c217ab567","target":"record","created_at":"2026-05-18T01:42:51Z","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":"0f178307dd6a7c2d2c652fd060f8acdad9001387c7ca93f5a827e9139724b843","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-06-23T14:08:54Z","title_canon_sha256":"c8c14ff268a50d84546db6760a96e75455f3a1399fb69e416a629d7963598fd1"},"schema_version":"1.0","source":{"id":"1406.5911","kind":"arxiv","version":1}},"canonical_sha256":"6134be81c6985df30549e9c6f9ceb5a04549f0f7c2a9fafe894c897c5fb19093","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6134be81c6985df30549e9c6f9ceb5a04549f0f7c2a9fafe894c897c5fb19093","first_computed_at":"2026-05-18T01:42:51.596581Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:42:51.596581Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"xqBSU5GhzGbrnivGmHTkI7bO5q3ROQWVBkQ0JQHc6nFNZHUAk/RUCY7sfef9fvSkWxPNjcWFstvAcv+nO+0yCg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:42:51.597270Z","signed_message":"canonical_sha256_bytes"},"source_id":"1406.5911","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:94894a632af7c665dc2b3002f4d95af1aa40c46a20b73394973c4b8c217ab567","sha256:42b453a92f1ebc460bf971071d4c09d812ce3fe90f2ad5d531843b0eabd6d5c8"],"state_sha256":"a405d2c40b198343150356cc95a0682e9052d315f19c5da49aa84e903894e6b2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pcRwJqdR8XUZcsDnUyIKb2CyaeLX0ehgq8lPH3Jq0otH4f1Cv25fdcg4WszgE6ATNklVEbm+nqyUZqQiR/VkAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T03:45:10.534864Z","bundle_sha256":"90243d173fee20b68e830bf1530a92f4ad993cbd01fdd2d7a041c73ef4ee2a25"}}