{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2008:FLL5OPVGUGDELBBVFCIJMCVYKM","short_pith_number":"pith:FLL5OPVG","canonical_record":{"source":{"id":"0805.3242","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-05-21T09:59:17Z","cross_cats_sorted":[],"title_canon_sha256":"33f095cb5d5e33c9e49bb20a2cc09aca9477362ee400cf6a91d998d3ee32ccaa","abstract_canon_sha256":"e1986cd5fc4f17697025777819f1084b680ade744c8002fd86bb5e92d0d77653"},"schema_version":"1.0"},"canonical_sha256":"2ad7d73ea6a1864584352890960ab8533ea5dc45e86fb11ab09c0e808ecce8c1","source":{"kind":"arxiv","id":"0805.3242","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0805.3242","created_at":"2026-05-18T01:05:13Z"},{"alias_kind":"arxiv_version","alias_value":"0805.3242v1","created_at":"2026-05-18T01:05:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0805.3242","created_at":"2026-05-18T01:05:13Z"},{"alias_kind":"pith_short_12","alias_value":"FLL5OPVGUGDE","created_at":"2026-05-18T12:25:57Z"},{"alias_kind":"pith_short_16","alias_value":"FLL5OPVGUGDELBBV","created_at":"2026-05-18T12:25:57Z"},{"alias_kind":"pith_short_8","alias_value":"FLL5OPVG","created_at":"2026-05-18T12:25:57Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2008:FLL5OPVGUGDELBBVFCIJMCVYKM","target":"record","payload":{"canonical_record":{"source":{"id":"0805.3242","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-05-21T09:59:17Z","cross_cats_sorted":[],"title_canon_sha256":"33f095cb5d5e33c9e49bb20a2cc09aca9477362ee400cf6a91d998d3ee32ccaa","abstract_canon_sha256":"e1986cd5fc4f17697025777819f1084b680ade744c8002fd86bb5e92d0d77653"},"schema_version":"1.0"},"canonical_sha256":"2ad7d73ea6a1864584352890960ab8533ea5dc45e86fb11ab09c0e808ecce8c1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:05:13.641994Z","signature_b64":"XIwJmwZfKSi17/xT7bXu7v7CryjfhJvrMUOV+G7nTNeh94+AuTdK7lqXUM6g31G0RubMFSVIOFy6XaK14FGCAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2ad7d73ea6a1864584352890960ab8533ea5dc45e86fb11ab09c0e808ecce8c1","last_reissued_at":"2026-05-18T01:05:13.641271Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:05:13.641271Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0805.3242","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":"2026-05-18T01:05:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UCG5y99Kec0iOVT+gx3sLnj2Ho1WJDLEbiavUFbr4X49vk+jHFHxskhMp9FsR3eKKTIQdDMZ46Ob0tJ9QBqFDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-18T23:10:10.573376Z"},"content_sha256":"85b2acdafc7c4543d2025299f0dce64be67f79b4b2c3cbdccd0ef3fee7594ff8","schema_version":"1.0","event_id":"sha256:85b2acdafc7c4543d2025299f0dce64be67f79b4b2c3cbdccd0ef3fee7594ff8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2008:FLL5OPVGUGDELBBVFCIJMCVYKM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"AGB stars of the intermediate-age LMC cluster NGC 1846 II. Dredge up along the AGB","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"B. Aringer, K.H. Hinkle, M.T. Lederer, O. Straniero, S. Cristallo, T. Lebzelter","submitted_at":"2008-05-21T09:59:17Z","abstract_excerpt":"Aims: We investigate the change in the surface abundance of $^{12}$C during the evolution along the AGB, aiming to constrain third dredge-up models.\n  Methods: High-resolution, near-infrared spectra of a sample of AGB stars in the LMC cluster NGC 1846 were obtained. A cluster sample ensures a high level of homogeneity with respect to age, metallicity, and distance. The C/O ratio and the ratio of $^{12}$C/$^{13}$C were measured and compared with our evolutionary models.\n  Results: For the first time, we show the evolution of the C/O and $^{12}$C/$^{13}$C ratios along a cluster AGB. Our findings"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0805.3242","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":"2026-05-18T01:05:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jRSqfc+4FfAHt2Tk2RP85ng2qUn3nVJnoZ4M8wH6HPAPN+7SM2lkfFYW913Xp69OoNzc7TDmElSaRsOXS9+aBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-18T23:10:10.574047Z"},"content_sha256":"51ea9a20e93d5d117e534b9a51dab10d418ddc916507b0c1f026f3b2458def32","schema_version":"1.0","event_id":"sha256:51ea9a20e93d5d117e534b9a51dab10d418ddc916507b0c1f026f3b2458def32"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/FLL5OPVGUGDELBBVFCIJMCVYKM/bundle.json","state_url":"https://pith.science/pith/FLL5OPVGUGDELBBVFCIJMCVYKM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/FLL5OPVGUGDELBBVFCIJMCVYKM/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":"2026-05-18T23:10:10Z","links":{"resolver":"https://pith.science/pith/FLL5OPVGUGDELBBVFCIJMCVYKM","bundle":"https://pith.science/pith/FLL5OPVGUGDELBBVFCIJMCVYKM/bundle.json","state":"https://pith.science/pith/FLL5OPVGUGDELBBVFCIJMCVYKM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/FLL5OPVGUGDELBBVFCIJMCVYKM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2008:FLL5OPVGUGDELBBVFCIJMCVYKM","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":"e1986cd5fc4f17697025777819f1084b680ade744c8002fd86bb5e92d0d77653","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-05-21T09:59:17Z","title_canon_sha256":"33f095cb5d5e33c9e49bb20a2cc09aca9477362ee400cf6a91d998d3ee32ccaa"},"schema_version":"1.0","source":{"id":"0805.3242","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0805.3242","created_at":"2026-05-18T01:05:13Z"},{"alias_kind":"arxiv_version","alias_value":"0805.3242v1","created_at":"2026-05-18T01:05:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0805.3242","created_at":"2026-05-18T01:05:13Z"},{"alias_kind":"pith_short_12","alias_value":"FLL5OPVGUGDE","created_at":"2026-05-18T12:25:57Z"},{"alias_kind":"pith_short_16","alias_value":"FLL5OPVGUGDELBBV","created_at":"2026-05-18T12:25:57Z"},{"alias_kind":"pith_short_8","alias_value":"FLL5OPVG","created_at":"2026-05-18T12:25:57Z"}],"graph_snapshots":[{"event_id":"sha256:51ea9a20e93d5d117e534b9a51dab10d418ddc916507b0c1f026f3b2458def32","target":"graph","created_at":"2026-05-18T01:05:13Z","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":"Aims: We investigate the change in the surface abundance of $^{12}$C during the evolution along the AGB, aiming to constrain third dredge-up models.\n  Methods: High-resolution, near-infrared spectra of a sample of AGB stars in the LMC cluster NGC 1846 were obtained. A cluster sample ensures a high level of homogeneity with respect to age, metallicity, and distance. The C/O ratio and the ratio of $^{12}$C/$^{13}$C were measured and compared with our evolutionary models.\n  Results: For the first time, we show the evolution of the C/O and $^{12}$C/$^{13}$C ratios along a cluster AGB. Our findings","authors_text":"B. Aringer, K.H. Hinkle, M.T. Lederer, O. Straniero, S. Cristallo, T. Lebzelter","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-05-21T09:59:17Z","title":"AGB stars of the intermediate-age LMC cluster NGC 1846 II. Dredge up along the AGB"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0805.3242","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":"sha256:85b2acdafc7c4543d2025299f0dce64be67f79b4b2c3cbdccd0ef3fee7594ff8","target":"record","created_at":"2026-05-18T01:05:13Z","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":"e1986cd5fc4f17697025777819f1084b680ade744c8002fd86bb5e92d0d77653","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-05-21T09:59:17Z","title_canon_sha256":"33f095cb5d5e33c9e49bb20a2cc09aca9477362ee400cf6a91d998d3ee32ccaa"},"schema_version":"1.0","source":{"id":"0805.3242","kind":"arxiv","version":1}},"canonical_sha256":"2ad7d73ea6a1864584352890960ab8533ea5dc45e86fb11ab09c0e808ecce8c1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2ad7d73ea6a1864584352890960ab8533ea5dc45e86fb11ab09c0e808ecce8c1","first_computed_at":"2026-05-18T01:05:13.641271Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:05:13.641271Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"XIwJmwZfKSi17/xT7bXu7v7CryjfhJvrMUOV+G7nTNeh94+AuTdK7lqXUM6g31G0RubMFSVIOFy6XaK14FGCAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:05:13.641994Z","signed_message":"canonical_sha256_bytes"},"source_id":"0805.3242","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:85b2acdafc7c4543d2025299f0dce64be67f79b4b2c3cbdccd0ef3fee7594ff8","sha256:51ea9a20e93d5d117e534b9a51dab10d418ddc916507b0c1f026f3b2458def32"],"state_sha256":"65ffcf6c9c28d397e6feed44753e8d6d2ccf323c218c1f918337bb1c3427406d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0JxlkjOGdjCREa8PfacShfwserhZd4OyCXAhpaY7rdavkdrIk1AFA36Y6sMjFa7DGsiXgwdn/wm2q6rj56aEAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-18T23:10:10.576280Z","bundle_sha256":"a82be21ea44a8c9d0356822bb9f4ac7236a016d3fd58ba454e39063f4210d0de"}}