{"paper":{"title":"Observational Signatures and Constraints on the Intermediate Neutron-Capture Process. The Case of the CEMP star TYC 6044-714-1 (RAVE J094921.8-161722)","license":"http://creativecommons.org/licenses/by/4.0/","headline":"High-precision abundances in CEMP star TYC 6044-714-1 favor the s+r model over i-process variants for the heavy-element pattern and Ba isotopic ratios.","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Deysi Cornejo Espinoza, Diego Vescovi, Laura Magrini, Luciano Piersanti, Martina Baratella, Riano E. Giribaldi, Sergio Cristallo, Sofia Randich, Valentina D'Orazi","submitted_at":"2026-05-11T18:00:02Z","abstract_excerpt":"Observational abundances of CEMP stars with patterns in between those produced by the rapid and slow nucleosynthesis processes (CEMP-rs stars) are currently invoked as evidence of synthesis via the intermediate process in the early AGB evolutionary phase of metal-poor low mass stars. Nevertheless, discriminating between r+s- and i-process hypotheses requires high-precision abundances obtained through advanced spectral modelling techniques. Theoretical models of the i-process have become more robust, incorporating refined stellar modelling and nuclear reaction physics, providing ranges of proba"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"The s+r model provides the best overall reproduction of the observed heavy-element abundance pattern and Ba isotopic ratios, yielding excellent agreement across all three s-process peaks. While i+s+r models with increasing overshooting efficiency improve the fit for specific elements, they do not consistently reproduce the full abundance pattern.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"The assumption that the latest AGB nucleosynthesis models, including their treatment of overshooting and neutron-capture rates, provide a sufficiently complete and accurate representation of possible i-process conditions in low-mass metal-poor stars without missing key physical ingredients.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"High-precision abundances and Ba isotopic ratios in TYC 6044-714-1 favor an s+r nucleosynthesis scenario over i-process models, which require implausible conditions and mismatch isotopic data.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"High-precision abundances in CEMP star TYC 6044-714-1 favor the s+r model over i-process variants for the heavy-element pattern and Ba isotopic ratios.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"c71257bae2a2387c86067dce4dbd483c743c7acde50b868a8abff335579bd3f0"},"source":{"id":"2605.11074","kind":"arxiv","version":2},"verdict":{"id":"9f061598-9848-49d6-9328-f4f0f3a62a6b","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-19T16:59:44.707468Z","strongest_claim":"The s+r model provides the best overall reproduction of the observed heavy-element abundance pattern and Ba isotopic ratios, yielding excellent agreement across all three s-process peaks. While i+s+r models with increasing overshooting efficiency improve the fit for specific elements, they do not consistently reproduce the full abundance pattern.","one_line_summary":"High-precision abundances and Ba isotopic ratios in TYC 6044-714-1 favor an s+r nucleosynthesis scenario over i-process models, which require implausible conditions and mismatch isotopic data.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"The assumption that the latest AGB nucleosynthesis models, including their treatment of overshooting and neutron-capture rates, provide a sufficiently complete and accurate representation of possible i-process conditions in low-mass metal-poor stars without missing key physical ingredients.","pith_extraction_headline":"High-precision abundances in CEMP star TYC 6044-714-1 favor the s+r model over i-process variants for the heavy-element pattern and Ba isotopic ratios."},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2605.11074/integrity.json","findings":[],"available":true,"detectors_run":[{"name":"ai_meta_artifact","ran_at":"2026-05-19T13:36:36.018687Z","status":"completed","version":"1.0.0","findings_count":0},{"name":"doi_title_agreement","ran_at":"2026-05-19T10:31:16.997161Z","status":"completed","version":"1.0.0","findings_count":0},{"name":"doi_compliance","ran_at":"2026-05-19T08:51:23.526810Z","status":"completed","version":"1.0.0","findings_count":0}],"snapshot_sha256":"f5fb510ec8e2946e4d7ea7175d2b237b7ca5526a146b7dc3bb914ef89f820728"},"references":{"count":292,"sample":[{"doi":"10.1088/0004-637x/797/1/21","year":null,"title":"Carbon-Enhanced Metal-Poor Star Frequencies in the Galaxy: Corrections for the Effect of Evolutionary Status on Carbon Abundances","work_id":"fe01feb1-a387-45e3-87ee-771405184dfb","ref_index":1,"cited_arxiv_id":"1410.2223","is_internal_anchor":true},{"doi":"10.1051/0004-6361/201118643","year":null,"title":"Silver and palladium help unveil the nature of a second r-process","work_id":"063c354e-7cfa-487f-a305-e572d86019eb","ref_index":2,"cited_arxiv_id":"1205.4744","is_internal_anchor":true},{"doi":"10.1146/annurev.astro.46.060407.145207","year":2008,"title":"J., & Gallino, R.\\ 2008, , 46, 241","work_id":"bcc099d0-eb87-41f3-a989-d02845c8a822","ref_index":3,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":null,"title":"Mixing along the red giant branch in metal-poor field stars. , keywords =","work_id":"85eac3bd-5164-426e-b9a9-2c8b665f0fed","ref_index":4,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"10.1051/0004-6361/201629969","year":null,"title":"The puzzle of the CNO isotope ratios in AGB carbon stars","work_id":"d985f523-2e66-4900-b8f5-83413811a387","ref_index":5,"cited_arxiv_id":"1611.06400","is_internal_anchor":true}],"resolved_work":292,"snapshot_sha256":"6005783c6650cc4ef007f59e59c500ca66a5709316069cbb1ea46f4c740527a4","internal_anchors":134},"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"}