{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:MUMUQGOHRSF4DNPCTGD4VRZRE7","short_pith_number":"pith:MUMUQGOH","canonical_record":{"source":{"id":"2310.19872","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2023-10-30T18:00:01Z","cross_cats_sorted":[],"title_canon_sha256":"99bd1c69fcb19248fc6597068543f8afec5d8065f2035090c7557a5082cc1ef8","abstract_canon_sha256":"b83e152c6e16723c8ad92e5ab6d8caf434f288a0164f10e59a3065186cc17b81"},"schema_version":"1.0"},"canonical_sha256":"65194819c78c8bc1b5e29987cac73127c852298276b467b5e041d566d02e6742","source":{"kind":"arxiv","id":"2310.19872","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2310.19872","created_at":"2026-07-05T07:07:20Z"},{"alias_kind":"arxiv_version","alias_value":"2310.19872v1","created_at":"2026-07-05T07:07:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2310.19872","created_at":"2026-07-05T07:07:20Z"},{"alias_kind":"pith_short_12","alias_value":"MUMUQGOHRSF4","created_at":"2026-07-05T07:07:20Z"},{"alias_kind":"pith_short_16","alias_value":"MUMUQGOHRSF4DNPC","created_at":"2026-07-05T07:07:20Z"},{"alias_kind":"pith_short_8","alias_value":"MUMUQGOH","created_at":"2026-07-05T07:07:20Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:MUMUQGOHRSF4DNPCTGD4VRZRE7","target":"record","payload":{"canonical_record":{"source":{"id":"2310.19872","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2023-10-30T18:00:01Z","cross_cats_sorted":[],"title_canon_sha256":"99bd1c69fcb19248fc6597068543f8afec5d8065f2035090c7557a5082cc1ef8","abstract_canon_sha256":"b83e152c6e16723c8ad92e5ab6d8caf434f288a0164f10e59a3065186cc17b81"},"schema_version":"1.0"},"canonical_sha256":"65194819c78c8bc1b5e29987cac73127c852298276b467b5e041d566d02e6742","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T07:07:20.837853Z","signature_b64":"KpYHG2n6HjEMI0nQJTmfiNu4NQKfAwSGuJPGgLp3l+qnvQmGIeFlJ6I/8s8+rDrLoh1NXbSa1MrzmVNoqRnYDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"65194819c78c8bc1b5e29987cac73127c852298276b467b5e041d566d02e6742","last_reissued_at":"2026-07-05T07:07:20.837366Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T07:07:20.837366Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2310.19872","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":"2026-07-05T07:07:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MzCmLc3cuF6zfZzMcMuoKe6vB42vVGIrixia4ubx6Ig4jy3rl949vvc541bNUxoNfx9b6i0/6YStgS2q6l2PCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-11T13:26:12.249063Z"},"content_sha256":"5a87e6844d13b5ab75d406eca1c23830bce9deccf3fb8d25dbfa52608bcf7011","schema_version":"1.0","event_id":"sha256:5a87e6844d13b5ab75d406eca1c23830bce9deccf3fb8d25dbfa52608bcf7011"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:MUMUQGOHRSF4DNPCTGD4VRZRE7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Investigating APOKASC Red Giant Stars with Abnormal Carbon to Nitrogen Ratios","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Daniel Huber, Erica Bufanda, Jamie Tayar, Richard Lane, Sten Hasselquist","submitted_at":"2023-10-30T18:00:01Z","abstract_excerpt":"The success of galactic archaeology and the reconstruction of the formation history of our galaxy critically relies on precise ages for large populations of stars. For evolved stars in the red clump and red giant branch, the carbon to nitrogen ratio ([C/N]) has recently been identified as a powerful diagnostic of mass and age that can be applied to stellar samples from spectroscopic surveys such as SDSS/APOGEE. Here, we show that at least 10\\% of red clump stars and %$\\approx 10\\%$ of red giant branch stars deviate from the standard relationship between [C/N] and mass. {We use the APOGEE-\\kepl"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2310.19872","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2310.19872/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T07:07:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RayeZeQcW4cuybY936epbdso+00Dzs/+ZkPGoTGgnWIQa5Y/EAnLK9UwEjJX5s4IEmYXq/wGIRfHfrQkVXX2Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-11T13:26:12.249465Z"},"content_sha256":"9542b3f4ff49c633dbfb6b64ee6292de369500b4ad957053c6ed238a5d951e84","schema_version":"1.0","event_id":"sha256:9542b3f4ff49c633dbfb6b64ee6292de369500b4ad957053c6ed238a5d951e84"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MUMUQGOHRSF4DNPCTGD4VRZRE7/bundle.json","state_url":"https://pith.science/pith/MUMUQGOHRSF4DNPCTGD4VRZRE7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MUMUQGOHRSF4DNPCTGD4VRZRE7/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":"2026-07-11T13:26:12Z","links":{"resolver":"https://pith.science/pith/MUMUQGOHRSF4DNPCTGD4VRZRE7","bundle":"https://pith.science/pith/MUMUQGOHRSF4DNPCTGD4VRZRE7/bundle.json","state":"https://pith.science/pith/MUMUQGOHRSF4DNPCTGD4VRZRE7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MUMUQGOHRSF4DNPCTGD4VRZRE7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:MUMUQGOHRSF4DNPCTGD4VRZRE7","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":"b83e152c6e16723c8ad92e5ab6d8caf434f288a0164f10e59a3065186cc17b81","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2023-10-30T18:00:01Z","title_canon_sha256":"99bd1c69fcb19248fc6597068543f8afec5d8065f2035090c7557a5082cc1ef8"},"schema_version":"1.0","source":{"id":"2310.19872","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2310.19872","created_at":"2026-07-05T07:07:20Z"},{"alias_kind":"arxiv_version","alias_value":"2310.19872v1","created_at":"2026-07-05T07:07:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2310.19872","created_at":"2026-07-05T07:07:20Z"},{"alias_kind":"pith_short_12","alias_value":"MUMUQGOHRSF4","created_at":"2026-07-05T07:07:20Z"},{"alias_kind":"pith_short_16","alias_value":"MUMUQGOHRSF4DNPC","created_at":"2026-07-05T07:07:20Z"},{"alias_kind":"pith_short_8","alias_value":"MUMUQGOH","created_at":"2026-07-05T07:07:20Z"}],"graph_snapshots":[{"event_id":"sha256:9542b3f4ff49c633dbfb6b64ee6292de369500b4ad957053c6ed238a5d951e84","target":"graph","created_at":"2026-07-05T07:07:20Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2310.19872/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The success of galactic archaeology and the reconstruction of the formation history of our galaxy critically relies on precise ages for large populations of stars. For evolved stars in the red clump and red giant branch, the carbon to nitrogen ratio ([C/N]) has recently been identified as a powerful diagnostic of mass and age that can be applied to stellar samples from spectroscopic surveys such as SDSS/APOGEE. Here, we show that at least 10\\% of red clump stars and %$\\approx 10\\%$ of red giant branch stars deviate from the standard relationship between [C/N] and mass. {We use the APOGEE-\\kepl","authors_text":"Daniel Huber, Erica Bufanda, Jamie Tayar, Richard Lane, Sten Hasselquist","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2023-10-30T18:00:01Z","title":"Investigating APOKASC Red Giant Stars with Abnormal Carbon to Nitrogen Ratios"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2310.19872","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":"sha256:5a87e6844d13b5ab75d406eca1c23830bce9deccf3fb8d25dbfa52608bcf7011","target":"record","created_at":"2026-07-05T07:07:20Z","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":"b83e152c6e16723c8ad92e5ab6d8caf434f288a0164f10e59a3065186cc17b81","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2023-10-30T18:00:01Z","title_canon_sha256":"99bd1c69fcb19248fc6597068543f8afec5d8065f2035090c7557a5082cc1ef8"},"schema_version":"1.0","source":{"id":"2310.19872","kind":"arxiv","version":1}},"canonical_sha256":"65194819c78c8bc1b5e29987cac73127c852298276b467b5e041d566d02e6742","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"65194819c78c8bc1b5e29987cac73127c852298276b467b5e041d566d02e6742","first_computed_at":"2026-07-05T07:07:20.837366Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T07:07:20.837366Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"KpYHG2n6HjEMI0nQJTmfiNu4NQKfAwSGuJPGgLp3l+qnvQmGIeFlJ6I/8s8+rDrLoh1NXbSa1MrzmVNoqRnYDw==","signature_status":"signed_v1","signed_at":"2026-07-05T07:07:20.837853Z","signed_message":"canonical_sha256_bytes"},"source_id":"2310.19872","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5a87e6844d13b5ab75d406eca1c23830bce9deccf3fb8d25dbfa52608bcf7011","sha256:9542b3f4ff49c633dbfb6b64ee6292de369500b4ad957053c6ed238a5d951e84"],"state_sha256":"83882a2f0e22312601d8fef07738249f06c0099a49849f1129a1a6efd4a878db"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ocGlO2GethOHKJV6F65XP3ZR5pQrdgCxrl9Drnj+Lo+DcAJw2AKqNcxMDwvniAC1Gg7mhMOxUbfQT0G1xSYLAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-11T13:26:12.251609Z","bundle_sha256":"09a123f5ce615f11b6119b44d39f9402c17ecb3e08396155665d8039963c2848"}}