{"id":"W2817747160","doi":"10.1093/mnras/sty2276","title":"The Pristine survey IV: approaching the Galactic metallicity floor with the discovery of an ultra-metal-poor star","year":2018,"lang":"en","type":"article","venue":"Monthly Notices of the Royal Astronomical Society","topic":"Stellar, planetary, and galactic studies","field":"Physics and Astronomy","cited_by":73,"is_retracted":false,"has_abstract":true,"ca_institutions":"Herzberg Institute of Astrophysics; University of Toronto; University of Victoria","funders":"College of Natural Resources and Sciences, Humboldt State University; Smithsonian Astrophysical Observatory; University of Colorado Boulder; Instituto de Astrofísica de Canarias; Office of Science; Max-Planck-Institut für Astronomie; Max-Planck-Institut für Astrophysik; Ministerio de Ciencia e Innovación; Centre National de la Recherche Scientifique; Lawrence Berkeley National Laboratory; Université de Strasbourg; Universidad Nacional Autónoma de México; Korea Astronomy and Space Science Institute; Ministério da Ciência, Tecnologia e Inovação; Ministerio de Economía y Competitividad; Nederlandse Organisatie voor Wetenschappelijk Onderzoek; Deutsche Forschungsgemeinschaft; University of Oxford; York University; Leibniz-Gemeinschaft; University of Notre Dame; Carnegie Mellon University; Alfred P. Sloan Foundation; University of Washington; Johns Hopkins University; Carnegie Institution of Washington; University of Utah; Yale University; Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung; Ohio State University; National Science Foundation; U.S. Department of Energy; Smithsonian Institution; New Mexico State University; University of Portsmouth; Vanderbilt University","keywords":"Physics; Metallicity; Astrophysics; Stars; Astronomy; Star formation; Photometry (optics); Metal; Chemistry","routes":{"ca_aff":true,"ca_fund":true,"ca_venue":false,"about_ca":false,"invisible_to_affiliation_only":false},"retraction":null,"screen":null,"direct_labels":[],"prediction":{"model_version":"metacan-v3-hybrid-931329e0061c","candidate_categories":[],"consensus_categories":[],"category_scores_codex":[0.0002163779,0.0002645683,0.0002335659,0.0005910199,0.0004664282,0.00114259,0.0003533754,0.000291274,0.001616064],"category_scores_gemma":[0.0005175662,0.0001481992,0.0001413541,0.000685559,0.0002476781,0.0007020961,0.0008565072,0.000389535,0.0007995585],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0002123914,"about_ca_system_score_gemma":0.0002059575,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.001899693,"about_ca_topic_score_gemma":0.005804797,"domain_scores_codex":[0.9998247,0.00001394131,0.000006828065,0.00007176003,0.00005005703,0.00003272349],"domain_scores_gemma":[0.9996364,0.00002412151,0.00009636263,0.0000608013,0.00007147212,0.0001106929],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"observational","study_design_gemma":"observational","study_design_scores_codex":[0.0003733523,0.00006696073,0.843937,0.0003955903,0.00015585,0.0007222765,0.0008204224,0.0005946042,0.06130784,0.002252435,0.009418658,0.07995497],"study_design_scores_gemma":[0.00001495177,0.0001133097,0.9224996,0.00004615694,0.00006183641,0.001148479,0.0004059139,0.0008970128,0.008120283,0.0007773841,0.0658909,0.00002418526],"study_design_candidate":"observational","study_design_consensus":"observational","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9835957,0.001026439,0.002139333,0.0003016742,0.00003192086,0.00001918234,0.003125677,0.0002422516,0.009517878],"genre_scores_gemma":[0.9774697,0.0009292347,0.007438349,0.0003375685,0.0001002137,0.0000299016,0.009162297,0.0001154607,0.004417269],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.001899693,"threshold_uncertainty_score":0.00540626,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.01191393869882521,"score_gpt":0.2099699404085087,"score_spread":0.1980560017096835,"validation_status":"score_only:v0-immature-baseline","note":"Baseline scores from an immature model (maturity gate not passed). Scores rank; they never assert a category."}}