{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:3ARRG5XIM67S7H742ULSCZ2UHM","short_pith_number":"pith:3ARRG5XI","canonical_record":{"source":{"id":"1209.5031","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-09-23T02:11:58Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"d6604a1d0003e60e1e95b0118021da9b687c25c7efe483a83954c46258793e74","abstract_canon_sha256":"41c3138a5e544f264abc80f2e8e63609237af7a526f681fd6ed5d64867d755af"},"schema_version":"1.0"},"canonical_sha256":"d8231376e867bf2f9ffcd5172167543b102c4a3839440e7f17c8fc28852c3d70","source":{"kind":"arxiv","id":"1209.5031","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1209.5031","created_at":"2026-05-18T01:54:19Z"},{"alias_kind":"arxiv_version","alias_value":"1209.5031v1","created_at":"2026-05-18T01:54:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1209.5031","created_at":"2026-05-18T01:54:19Z"},{"alias_kind":"pith_short_12","alias_value":"3ARRG5XIM67S","created_at":"2026-05-18T12:26:50Z"},{"alias_kind":"pith_short_16","alias_value":"3ARRG5XIM67S7H74","created_at":"2026-05-18T12:26:50Z"},{"alias_kind":"pith_short_8","alias_value":"3ARRG5XI","created_at":"2026-05-18T12:26:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:3ARRG5XIM67S7H742ULSCZ2UHM","target":"record","payload":{"canonical_record":{"source":{"id":"1209.5031","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-09-23T02:11:58Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"d6604a1d0003e60e1e95b0118021da9b687c25c7efe483a83954c46258793e74","abstract_canon_sha256":"41c3138a5e544f264abc80f2e8e63609237af7a526f681fd6ed5d64867d755af"},"schema_version":"1.0"},"canonical_sha256":"d8231376e867bf2f9ffcd5172167543b102c4a3839440e7f17c8fc28852c3d70","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:54:19.840887Z","signature_b64":"ZV2p1jFZASmBq8riYJAFiaJ4cBH6vc4aNLsIj9u9L+5UgLuaJ5Te+kDWmewLLM6Y7ZLaWcWDQLrEeMtny537Cw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d8231376e867bf2f9ffcd5172167543b102c4a3839440e7f17c8fc28852c3d70","last_reissued_at":"2026-05-18T01:54:19.840355Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:54:19.840355Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1209.5031","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":"2026-05-18T01:54:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DYSAXVyQp1N+8ej0cGurs1K4uhYD4X+2CBFX/AVO4zpq29QXUDvetHrve45Eqe3cu1X7sUYWhB6nxA0u74J5CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T20:26:51.978885Z"},"content_sha256":"ac0114f3a442d95cda004fa740da8e9ef65e37a71e0a27e3fdb659422ebd762a","schema_version":"1.0","event_id":"sha256:ac0114f3a442d95cda004fa740da8e9ef65e37a71e0a27e3fdb659422ebd762a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:3ARRG5XIM67S7H742ULSCZ2UHM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Radial Metallicity Distribution Breaks at Corotation Radius in Spiral Galaxies","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.CO","authors_text":"Jacques R. D. L\\'epine, Sergio Scarano Jr","submitted_at":"2012-09-23T02:11:58Z","abstract_excerpt":"We analyzed the relation between the corotation radii and the galactic radii at which breaks or changes of slope of the metallicity gradients occur in spiral galaxies. With this purpose we compiled the results from the literature on rotation curves, corotation radii and radial metallicity distributions of 27 galaxies, of which 16 were considered qualified to be studied in the context of this work. We re-scaled all references of each galaxy to a same framework in order to compare the results and to identify the radii where breaks and changes of slopes are found, when non-linear models fit the r"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1209.5031","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":"2026-05-18T01:54:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"E+lmsbJGltD2nURO6gBo6HYUO6wwUF3Bkfxn2bX612fcFN7jlwYNcZKgKoAFpqvvurEWSwrqUdsifm5qz0rtBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T20:26:51.979233Z"},"content_sha256":"69f10e2c196b9cd29a3fe68cf30c9e970d9d1e525018b871103b5ab049fc2c68","schema_version":"1.0","event_id":"sha256:69f10e2c196b9cd29a3fe68cf30c9e970d9d1e525018b871103b5ab049fc2c68"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/3ARRG5XIM67S7H742ULSCZ2UHM/bundle.json","state_url":"https://pith.science/pith/3ARRG5XIM67S7H742ULSCZ2UHM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/3ARRG5XIM67S7H742ULSCZ2UHM/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":"2026-06-02T20:26:51Z","links":{"resolver":"https://pith.science/pith/3ARRG5XIM67S7H742ULSCZ2UHM","bundle":"https://pith.science/pith/3ARRG5XIM67S7H742ULSCZ2UHM/bundle.json","state":"https://pith.science/pith/3ARRG5XIM67S7H742ULSCZ2UHM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/3ARRG5XIM67S7H742ULSCZ2UHM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:3ARRG5XIM67S7H742ULSCZ2UHM","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":"41c3138a5e544f264abc80f2e8e63609237af7a526f681fd6ed5d64867d755af","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-09-23T02:11:58Z","title_canon_sha256":"d6604a1d0003e60e1e95b0118021da9b687c25c7efe483a83954c46258793e74"},"schema_version":"1.0","source":{"id":"1209.5031","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1209.5031","created_at":"2026-05-18T01:54:19Z"},{"alias_kind":"arxiv_version","alias_value":"1209.5031v1","created_at":"2026-05-18T01:54:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1209.5031","created_at":"2026-05-18T01:54:19Z"},{"alias_kind":"pith_short_12","alias_value":"3ARRG5XIM67S","created_at":"2026-05-18T12:26:50Z"},{"alias_kind":"pith_short_16","alias_value":"3ARRG5XIM67S7H74","created_at":"2026-05-18T12:26:50Z"},{"alias_kind":"pith_short_8","alias_value":"3ARRG5XI","created_at":"2026-05-18T12:26:50Z"}],"graph_snapshots":[{"event_id":"sha256:69f10e2c196b9cd29a3fe68cf30c9e970d9d1e525018b871103b5ab049fc2c68","target":"graph","created_at":"2026-05-18T01:54:19Z","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 analyzed the relation between the corotation radii and the galactic radii at which breaks or changes of slope of the metallicity gradients occur in spiral galaxies. With this purpose we compiled the results from the literature on rotation curves, corotation radii and radial metallicity distributions of 27 galaxies, of which 16 were considered qualified to be studied in the context of this work. We re-scaled all references of each galaxy to a same framework in order to compare the results and to identify the radii where breaks and changes of slopes are found, when non-linear models fit the r","authors_text":"Jacques R. D. L\\'epine, Sergio Scarano Jr","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-09-23T02:11:58Z","title":"Radial Metallicity Distribution Breaks at Corotation Radius in Spiral Galaxies"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1209.5031","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:ac0114f3a442d95cda004fa740da8e9ef65e37a71e0a27e3fdb659422ebd762a","target":"record","created_at":"2026-05-18T01:54:19Z","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":"41c3138a5e544f264abc80f2e8e63609237af7a526f681fd6ed5d64867d755af","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-09-23T02:11:58Z","title_canon_sha256":"d6604a1d0003e60e1e95b0118021da9b687c25c7efe483a83954c46258793e74"},"schema_version":"1.0","source":{"id":"1209.5031","kind":"arxiv","version":1}},"canonical_sha256":"d8231376e867bf2f9ffcd5172167543b102c4a3839440e7f17c8fc28852c3d70","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d8231376e867bf2f9ffcd5172167543b102c4a3839440e7f17c8fc28852c3d70","first_computed_at":"2026-05-18T01:54:19.840355Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:54:19.840355Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ZV2p1jFZASmBq8riYJAFiaJ4cBH6vc4aNLsIj9u9L+5UgLuaJ5Te+kDWmewLLM6Y7ZLaWcWDQLrEeMtny537Cw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:54:19.840887Z","signed_message":"canonical_sha256_bytes"},"source_id":"1209.5031","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ac0114f3a442d95cda004fa740da8e9ef65e37a71e0a27e3fdb659422ebd762a","sha256:69f10e2c196b9cd29a3fe68cf30c9e970d9d1e525018b871103b5ab049fc2c68"],"state_sha256":"2ad1ae201b16d4d371b6d711216b2116a17426f06fe69f9e93f33304709c8e3b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hrF7XAHmkuQzzKVB1nXnAJW0yN3BYd/R+2HouIj31I1D0G65XKQPKtIig2H/p/NxinrXMXBLsV+h4dYEWqXTCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T20:26:51.981296Z","bundle_sha256":"44c35043879d61deb8c8c7cd159bc3cf553db143020e55eb1c1f34f5e51438e1"}}