{"paper":{"title":"CoSHA: Code for Stellar properties Heuristic Assignment -- for the MaStar stellar library","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.SR","authors_text":"Alfredo Mej\\'ia-Narv\\'aez, Gustavo Bruzual, Jorge Barrera-Ballesteros, Leticia Carigi, Mabel Valerdi, Niv Drory, Renbin Yan, Sebastian F. S\\'anchez","submitted_at":"2021-08-03T18:35:24Z","abstract_excerpt":"We introduce \\cosha{}: a Code for Stellar properties Heuristic Assignment. In order to estimate the stellar properties, \\cosha{} implements a Gradient Tree Boosting algorithm to label each star across the parameter space ($T_\\mathrm{eff}$, $\\log{g}$, $[\\mathrm{Fe}/\\mathrm{H}]$, and $[\\alpha/\\mathrm{Fe}]$). We use \\cosha{} to estimate these stellar atmospheric parameters of $22\\,$k unique stars in the MaNGA Stellar Library (MaStar). To quantify the reliability of our approach, we run both internal tests using the G\\\"ottingen Stellar Library (GSL, a theoretical library) and the first data releas"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2108.01697","kind":"arxiv","version":3},"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/2108.01697/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"}