{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:MGER67HPRGVIXXZTR6RDE7OF3C","short_pith_number":"pith:MGER67HP","canonical_record":{"source":{"id":"1510.07814","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-10-27T09:04:35Z","cross_cats_sorted":[],"title_canon_sha256":"b4211bf0977c92ff740a66ff4121a8ab4457070714bf33fe716dc3df6a89c3c0","abstract_canon_sha256":"cf7b0a0850ca4927479550b3ddc6ed6ef57d2648ba984d149764e4af8dc24e62"},"schema_version":"1.0"},"canonical_sha256":"61891f7cef89aa8bdf338fa2327dc5d898993f6add31bc48aba48050467d84c5","source":{"kind":"arxiv","id":"1510.07814","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1510.07814","created_at":"2026-05-18T01:27:21Z"},{"alias_kind":"arxiv_version","alias_value":"1510.07814v1","created_at":"2026-05-18T01:27:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1510.07814","created_at":"2026-05-18T01:27:21Z"},{"alias_kind":"pith_short_12","alias_value":"MGER67HPRGVI","created_at":"2026-05-18T12:29:32Z"},{"alias_kind":"pith_short_16","alias_value":"MGER67HPRGVIXXZT","created_at":"2026-05-18T12:29:32Z"},{"alias_kind":"pith_short_8","alias_value":"MGER67HP","created_at":"2026-05-18T12:29:32Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:MGER67HPRGVIXXZTR6RDE7OF3C","target":"record","payload":{"canonical_record":{"source":{"id":"1510.07814","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-10-27T09:04:35Z","cross_cats_sorted":[],"title_canon_sha256":"b4211bf0977c92ff740a66ff4121a8ab4457070714bf33fe716dc3df6a89c3c0","abstract_canon_sha256":"cf7b0a0850ca4927479550b3ddc6ed6ef57d2648ba984d149764e4af8dc24e62"},"schema_version":"1.0"},"canonical_sha256":"61891f7cef89aa8bdf338fa2327dc5d898993f6add31bc48aba48050467d84c5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:27:21.989903Z","signature_b64":"NpJwpnM4o0TRqfJVS48+5IS9dPCoM53MRTWS0AouxPiKpurJIuWuAMgutMCQ/jXDlw34vA8dlF42Ke3aqD4EBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"61891f7cef89aa8bdf338fa2327dc5d898993f6add31bc48aba48050467d84c5","last_reissued_at":"2026-05-18T01:27:21.989349Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:27:21.989349Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1510.07814","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":"2026-05-18T01:27:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uBNih04fYZZceRGeK1/2l6bW+2+yycHP86jyqGlxMaXGUv2PrR7psKNJJg+X7kJGdE6KmdQYC3Nng/xFlm/mCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T19:01:36.619122Z"},"content_sha256":"1c35e9a1684986525a58925ba78b5e44d3358707ac6d7deb95d6a456d7049e1f","schema_version":"1.0","event_id":"sha256:1c35e9a1684986525a58925ba78b5e44d3358707ac6d7deb95d6a456d7049e1f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:MGER67HPRGVIXXZTR6RDE7OF3C","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Subaru/HDS study of CH stars: elemental abundances for stellar neutron-capture process studies","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"181-8588 Japan), Aruna Goswami (1), Bangalore 560034, Drisya Karinkuzhi (1) ((1) Indian Institute of Astrophysics, India (2) National Astronomical Observatory, Koramangala, Mitaka, Tokyo, Wako Aoki (2)","submitted_at":"2015-10-27T09:04:35Z","abstract_excerpt":"A comprehensive abundance analysis providing rare insight into the chemical history of lead stars is still lacking. We present results from high resolution (R ~ 50000), spectral analyses of three CH stars, HD 26, HD 198269, HD 224959, and, a carbon star with a dusty envelope, HD 100764. Previous studies on these objects are limited by both resolution and wavelength regions and the results differ significantly from each other. We have undertaken to re-analyse the chemical composition of these objects based on high resolution Subaru spectra covering the wavelength regions 4020 to 6775 A,. Consid"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1510.07814","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":"2026-05-18T01:27:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3L5KWtxNOI+GAj7Xyr1ZWPwAhQroJoIyZ8z/ZYVEoubRujYJeuNnZ/iqRnBianJNuHuRuPeAoM06PsG2Ej1WDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T19:01:36.619694Z"},"content_sha256":"4c87976a098be7e9a8a2dcd7fd3643bb4f83d9cd6ca4dc18bb22456266415813","schema_version":"1.0","event_id":"sha256:4c87976a098be7e9a8a2dcd7fd3643bb4f83d9cd6ca4dc18bb22456266415813"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MGER67HPRGVIXXZTR6RDE7OF3C/bundle.json","state_url":"https://pith.science/pith/MGER67HPRGVIXXZTR6RDE7OF3C/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MGER67HPRGVIXXZTR6RDE7OF3C/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":"2026-05-25T19:01:36Z","links":{"resolver":"https://pith.science/pith/MGER67HPRGVIXXZTR6RDE7OF3C","bundle":"https://pith.science/pith/MGER67HPRGVIXXZTR6RDE7OF3C/bundle.json","state":"https://pith.science/pith/MGER67HPRGVIXXZTR6RDE7OF3C/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MGER67HPRGVIXXZTR6RDE7OF3C/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:MGER67HPRGVIXXZTR6RDE7OF3C","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":"cf7b0a0850ca4927479550b3ddc6ed6ef57d2648ba984d149764e4af8dc24e62","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-10-27T09:04:35Z","title_canon_sha256":"b4211bf0977c92ff740a66ff4121a8ab4457070714bf33fe716dc3df6a89c3c0"},"schema_version":"1.0","source":{"id":"1510.07814","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1510.07814","created_at":"2026-05-18T01:27:21Z"},{"alias_kind":"arxiv_version","alias_value":"1510.07814v1","created_at":"2026-05-18T01:27:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1510.07814","created_at":"2026-05-18T01:27:21Z"},{"alias_kind":"pith_short_12","alias_value":"MGER67HPRGVI","created_at":"2026-05-18T12:29:32Z"},{"alias_kind":"pith_short_16","alias_value":"MGER67HPRGVIXXZT","created_at":"2026-05-18T12:29:32Z"},{"alias_kind":"pith_short_8","alias_value":"MGER67HP","created_at":"2026-05-18T12:29:32Z"}],"graph_snapshots":[{"event_id":"sha256:4c87976a098be7e9a8a2dcd7fd3643bb4f83d9cd6ca4dc18bb22456266415813","target":"graph","created_at":"2026-05-18T01:27:21Z","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":"A comprehensive abundance analysis providing rare insight into the chemical history of lead stars is still lacking. We present results from high resolution (R ~ 50000), spectral analyses of three CH stars, HD 26, HD 198269, HD 224959, and, a carbon star with a dusty envelope, HD 100764. Previous studies on these objects are limited by both resolution and wavelength regions and the results differ significantly from each other. We have undertaken to re-analyse the chemical composition of these objects based on high resolution Subaru spectra covering the wavelength regions 4020 to 6775 A,. Consid","authors_text":"181-8588 Japan), Aruna Goswami (1), Bangalore 560034, Drisya Karinkuzhi (1) ((1) Indian Institute of Astrophysics, India (2) National Astronomical Observatory, Koramangala, Mitaka, Tokyo, Wako Aoki (2)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-10-27T09:04:35Z","title":"Subaru/HDS study of CH stars: elemental abundances for stellar neutron-capture process studies"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1510.07814","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":"sha256:1c35e9a1684986525a58925ba78b5e44d3358707ac6d7deb95d6a456d7049e1f","target":"record","created_at":"2026-05-18T01:27:21Z","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":"cf7b0a0850ca4927479550b3ddc6ed6ef57d2648ba984d149764e4af8dc24e62","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-10-27T09:04:35Z","title_canon_sha256":"b4211bf0977c92ff740a66ff4121a8ab4457070714bf33fe716dc3df6a89c3c0"},"schema_version":"1.0","source":{"id":"1510.07814","kind":"arxiv","version":1}},"canonical_sha256":"61891f7cef89aa8bdf338fa2327dc5d898993f6add31bc48aba48050467d84c5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"61891f7cef89aa8bdf338fa2327dc5d898993f6add31bc48aba48050467d84c5","first_computed_at":"2026-05-18T01:27:21.989349Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:27:21.989349Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"NpJwpnM4o0TRqfJVS48+5IS9dPCoM53MRTWS0AouxPiKpurJIuWuAMgutMCQ/jXDlw34vA8dlF42Ke3aqD4EBw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:27:21.989903Z","signed_message":"canonical_sha256_bytes"},"source_id":"1510.07814","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1c35e9a1684986525a58925ba78b5e44d3358707ac6d7deb95d6a456d7049e1f","sha256:4c87976a098be7e9a8a2dcd7fd3643bb4f83d9cd6ca4dc18bb22456266415813"],"state_sha256":"e6d1bd12f525ed225f3da406d2cbb672d51513e21cd1b5bdee48d816c17a5cd0"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AKVZL3mCuN6ijbIFYEh4WAbzQgtfPMULsNIDd8wD2pguhi4Au/MKoJMZWPuHIOREm/grqD+fWnmGMVCAtC+mCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T19:01:36.627994Z","bundle_sha256":"a978fe3f549bb59d86ba3832ba78bbdda6965e38389d0c589ccfb68a4897cb44"}}