{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:1998:VYKUPDILV6MKXVS2ELEBRK2LZS","short_pith_number":"pith:VYKUPDIL","schema_version":"1.0","canonical_sha256":"ae15478d0baf98abd65a22c818ab4bcca1929cbaef929b4a4994d05ea613b90d","source":{"kind":"arxiv","id":"astro-ph/9808272","version":2},"attestation_state":"computed","paper":{"title":"R-Process Abundances and Chronometers in Metal-Poor Stars","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"B. Pfeiffer, Christopher Sneden, David Tytler, F.-K. Thielemann, John J. Cowan, K.-L. Kratz, Scott Burles, Timothy C. Beers","submitted_at":"1998-08-24T19:20:07Z","abstract_excerpt":"Rapid neutron-capture (i.e., r-process) nucleosynthesis calculations, employing internally consistent and physically realistic nuclear physics input (QRPA beta-decay rates and the ETFSI-Q nuclear mass model), have been made. These calculations are compared with ground-based and HST observations of neutron-capture elements in the metal poor halo stars CS 22892--052, HD 115444, HD 122563 and HD 126238. The elemental abundances in all four metal-poor stars are consistent with the solar r-process elemental distribution for the elements Z >/= 56. These results strongly suggest, at least for those e"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"astro-ph/9808272","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1998-08-24T19:20:07Z","cross_cats_sorted":[],"title_canon_sha256":"8365475c125871af5857b041b457032fbcaf7cfe1bc6d5bf771062ab3752a6dd","abstract_canon_sha256":"719ad32aceeafc473e28b96faa56caf8c6c48c9c445d1386befd5665b70c03ed"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:06:57.562783Z","signature_b64":"xjpkrB9xeiccg1AlFnvG350k4XPZ0FDjMmGXOimmtMrEvGZGVY3Prwdfgijhe9q/1SneKqw4ZnqWxkupBYU8Bw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ae15478d0baf98abd65a22c818ab4bcca1929cbaef929b4a4994d05ea613b90d","last_reissued_at":"2026-07-04T16:06:57.562370Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:06:57.562370Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"R-Process Abundances and Chronometers in Metal-Poor Stars","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"B. Pfeiffer, Christopher Sneden, David Tytler, F.-K. Thielemann, John J. Cowan, K.-L. Kratz, Scott Burles, Timothy C. Beers","submitted_at":"1998-08-24T19:20:07Z","abstract_excerpt":"Rapid neutron-capture (i.e., r-process) nucleosynthesis calculations, employing internally consistent and physically realistic nuclear physics input (QRPA beta-decay rates and the ETFSI-Q nuclear mass model), have been made. These calculations are compared with ground-based and HST observations of neutron-capture elements in the metal poor halo stars CS 22892--052, HD 115444, HD 122563 and HD 126238. The elemental abundances in all four metal-poor stars are consistent with the solar r-process elemental distribution for the elements Z >/= 56. These results strongly suggest, at least for those e"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9808272","kind":"arxiv","version":2},"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/astro-ph/9808272/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"},"aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9808272","created_at":"2026-07-04T16:06:57.562430+00:00"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9808272v2","created_at":"2026-07-04T16:06:57.562430+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9808272","created_at":"2026-07-04T16:06:57.562430+00:00"},{"alias_kind":"pith_short_12","alias_value":"VYKUPDILV6MK","created_at":"2026-07-04T16:06:57.562430+00:00"},{"alias_kind":"pith_short_16","alias_value":"VYKUPDILV6MKXVS2","created_at":"2026-07-04T16:06:57.562430+00:00"},{"alias_kind":"pith_short_8","alias_value":"VYKUPDIL","created_at":"2026-07-04T16:06:57.562430+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/VYKUPDILV6MKXVS2ELEBRK2LZS","json":"https://pith.science/pith/VYKUPDILV6MKXVS2ELEBRK2LZS.json","graph_json":"https://pith.science/api/pith-number/VYKUPDILV6MKXVS2ELEBRK2LZS/graph.json","events_json":"https://pith.science/api/pith-number/VYKUPDILV6MKXVS2ELEBRK2LZS/events.json","paper":"https://pith.science/paper/VYKUPDIL"},"agent_actions":{"view_html":"https://pith.science/pith/VYKUPDILV6MKXVS2ELEBRK2LZS","download_json":"https://pith.science/pith/VYKUPDILV6MKXVS2ELEBRK2LZS.json","view_paper":"https://pith.science/paper/VYKUPDIL","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=astro-ph/9808272&json=true","fetch_graph":"https://pith.science/api/pith-number/VYKUPDILV6MKXVS2ELEBRK2LZS/graph.json","fetch_events":"https://pith.science/api/pith-number/VYKUPDILV6MKXVS2ELEBRK2LZS/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/VYKUPDILV6MKXVS2ELEBRK2LZS/action/timestamp_anchor","attest_storage":"https://pith.science/pith/VYKUPDILV6MKXVS2ELEBRK2LZS/action/storage_attestation","attest_author":"https://pith.science/pith/VYKUPDILV6MKXVS2ELEBRK2LZS/action/author_attestation","sign_citation":"https://pith.science/pith/VYKUPDILV6MKXVS2ELEBRK2LZS/action/citation_signature","submit_replication":"https://pith.science/pith/VYKUPDILV6MKXVS2ELEBRK2LZS/action/replication_record"}},"created_at":"2026-07-04T16:06:57.562430+00:00","updated_at":"2026-07-04T16:06:57.562430+00:00"}