{"id":"W4362602667","doi":"10.1089/ast.2022.0127","title":"Linking Methanogenesis in Low-Temperature Hydrothermal Vent Systems to Planetary Spectra: Methane Biosignatures on an Archean-Earth-like Exoplanet","year":2023,"lang":"en","type":"article","venue":"Astrobiology","topic":"Astro and Planetary Science","field":"Physics and Astronomy","cited_by":4,"is_retracted":false,"has_abstract":true,"ca_institutions":"University of Toronto","funders":"Science and Technology Facilities Council; Natural Sciences and Engineering Research Council of Canada; China Scholarship Council","keywords":"Astrobiology; Exoplanet; Methane; Planet; Archean; Methanogenesis; Earth (classical element); Hydrothermal circulation; Hydrothermal vent; Early Earth; Earth science; Environmental science; Geology; Geochemistry; Physics; Astronomy; Biology; Paleontology; Ecology","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":"codex-gemma-dda1882f352a","candidate_categories":["metaepi_narrow"],"consensus_categories":[],"category_scores_codex":[0.0004786603,0.0003020355,0.0004011678,0.0003254715,0.00008834065,0.00003945557,0.0004150676,0.000147714,0.0002040989],"category_scores_gemma":[0.000003685686,0.0002619258,0.00006545812,0.0004478846,0.00006011361,0.00008909302,0.00005663078,0.0004446138,0.000446384],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.00001444883,"about_ca_system_score_gemma":0.00006345989,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.0006212248,"about_ca_topic_score_gemma":0.0001629873,"domain_scores_codex":[0.9978207,0.0003485283,0.0003060766,0.0006180025,0.0001550991,0.0007515969],"domain_scores_gemma":[0.9991518,0.00019707,0.00007917039,0.0003538883,0.0000154249,0.000202623],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"bench_or_experimental","study_design_gemma":"observational","study_design_scores_codex":[0.0004305135,0.0002240388,0.1682921,0.00004936587,0.0001767211,0.0002143808,0.0009781831,0.2618707,0.5582665,0.001678565,0.001462811,0.006356123],"study_design_scores_gemma":[0.003217929,0.004677594,0.8347392,0.000701304,0.0001013045,0.0001064701,0.002390173,0.01052136,0.121893,0.0003416956,0.01867307,0.002636892],"study_design_candidate":"observational","study_design_consensus":null,"genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9974595,0.0001005725,0.0001147836,0.0001348519,0.0007539375,0.0003972777,0.0004971059,0.00007848527,0.0004635396],"genre_scores_gemma":[0.9954286,0.000003330024,0.0004182469,0.0002159144,0.0005784723,0.00003070479,0.003020775,0.00002119693,0.0002828119],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.666447,"threshold_uncertainty_score":0.9999833,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.0116964707866193,"score_gpt":0.2368172409942072,"score_spread":0.2251207702075879,"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."}}