{"paper":{"title":"The odd-isotope fractions of Barium in CEMP-r/s star HE 0338-3945 and r-II star CS 31082-001","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Bo Zhang, Gang Zhao, Jianrong Shi, Ji Li, Wenyuan Cui, Xiaohua Jiang, Xiaoying Meng","submitted_at":"2016-06-30T01:11:02Z","abstract_excerpt":"We report the first measurement of the odd-isotope fractions for barium, \\fodd\\, in two extremely metal-poor stars: a CEMP-r/s star \\he\\ (\\feh\\,$=-2.42\\pm0.11$) and an r-II star \\cs\\ (\\feh\\,$=-2.90\\pm0.13$). The measured \\fodd\\ values are $0.23\\pm0.12$ corresponding to $34.3\\pm34.3$\\% of the r-process contributions for \\he\\ and $0.43\\pm0.09$ corresponding to $91.4\\pm25.7$\\% of the r-process contribution to Ba production for \\cs. The high r-process signature of barium in \\cs\\ ($91.4\\pm25.7\\%$) suggests that the majority of the heavy elements in this star were synthesised via an r-process path, "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1606.09318","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"}