{"id":"W7107861163","doi":"10.48550/arxiv.2511.20923","title":"The Diversity of Cold Worlds: Age and Characterization of the Exoplanet COCONUTS-2b","year":2025,"lang":"","type":"preprint","venue":"arXiv (Cornell University)","topic":"Stellar, planetary, and galactic studies","field":"Physics and Astronomy","cited_by":0,"is_retracted":false,"has_abstract":true,"ca_institutions":"Université de Montréal; Espace pour la vie","funders":"","keywords":"Brown dwarf; Exoplanet; Astrometry; Metallicity; Photometry (optics); Stars; Stellar classification; RADIUS; Sigma","routes":{"ca_aff":true,"ca_fund":false,"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":[0.0001897909,0.0002644316,0.0002439926,0.001643919,0.0009261469,0.0009208877,0.0003178738,0.0002041444,0.0007092985],"category_scores_gemma":[0.0003940644,0.0001031662,0.0001207909,0.0009433976,0.0003613245,0.0005278835,0.0006318734,0.0002167982,0.0003141024],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0006054034,"about_ca_system_score_gemma":0.0001777212,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.01209191,"about_ca_topic_score_gemma":0.01710836,"domain_scores_codex":[0.9998528,0.000008280642,0.000007826209,0.00006863686,0.00003042868,0.000032017],"domain_scores_gemma":[0.9996004,0.00001841699,0.0001260281,0.00003392254,0.00007991899,0.0001412502],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"observational","study_design_gemma":"observational","study_design_scores_codex":[0.0002063181,0.00003530383,0.956179,0.00002472632,0.00002620837,0.0002376442,0.0007495974,0.000134899,0.02934023,0.0003788232,0.0005378085,0.01214955],"study_design_scores_gemma":[0.000002731124,0.00002788149,0.9965532,0.000005157695,0.000008081056,0.0002750807,0.0002556065,0.0003565291,0.000966972,0.0000766794,0.001467794,0.000004214565],"study_design_candidate":"observational","study_design_consensus":"observational","genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9977146,0.0002539987,0.0001601446,0.00002605517,0.000004785742,0.000005349869,0.0001829137,0.0000145618,0.001637643],"genre_scores_gemma":[0.9979711,0.00009463478,0.0003976002,0.00002833988,0.00001533682,0.000008271217,0.0009867643,0.00001624755,0.000481525],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.01209191,"threshold_uncertainty_score":0.02404302,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.0313829529978352,"score_gpt":0.1648986051977334,"score_spread":0.1335156521998982,"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."}}