{"id":"W4416028851","doi":"10.1016/j.lssr.2025.11.003","title":"Deciphering chemical heritage: Isotopic study of methanol and other complex organic molecules in a solar-type protostar NGC 1333 IRAS 4A2","year":2025,"lang":"en","type":"article","venue":"Life Sciences in Space Research","topic":"Astrophysics and Star Formation Studies","field":"Physics and Astronomy","cited_by":0,"is_retracted":false,"has_abstract":false,"ca_institutions":"","funders":"National Institutes of Natural Sciences; National Radio Astronomy Observatory; National Research Council Canada; National Astronomical Observatory of Japan; Ministry of Science and Technology, Taiwan; Al Akhawayn University in Ifrane","keywords":"Isotopologue; Protostar; Deuterium; Astrochemistry; Molecule; Excitation temperature; Methanol; Star formation; Spectral line; Dissociation (chemistry)","routes":{"ca_aff":false,"ca_fund":true,"ca_venue":false,"about_ca":false,"invisible_to_affiliation_only":true},"retraction":null,"screen":null,"direct_labels":[],"prediction":{"model_version":"metacan-v3-hybrid-931329e0061c","candidate_categories":[],"consensus_categories":[],"category_scores_codex":[0.0001055842,0.0001867851,0.0001189416,0.0007201288,0.0005847307,0.0003238114,0.0003659155,0.0004050997,0.001520728],"category_scores_gemma":[0.0002100719,0.0001162226,0.0001216436,0.0003902919,0.0003384304,0.0003454107,0.0003446387,0.0003055743,0.000174834],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.000371689,"about_ca_system_score_gemma":0.0002974688,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.01605377,"about_ca_topic_score_gemma":0.02303251,"domain_scores_codex":[0.999966,0.000002173829,0.000001322872,0.000009733799,0.000008963409,0.00001180382],"domain_scores_gemma":[0.9999033,0.0000134602,0.0000228291,0.00001095605,0.0000289268,0.00002039611],"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":[0.0005348062,0.00009297118,0.1307473,0.00004427054,0.00004468121,0.0009185689,0.0005616685,0.000797494,0.8584175,0.0005432659,0.0001684477,0.007129024],"study_design_scores_gemma":[0.00004328935,0.0002586009,0.8736988,0.00001339457,0.00009276734,0.0009965699,0.002422655,0.008982474,0.1090004,0.0006763913,0.003785203,0.0000293106],"study_design_candidate":"observational","study_design_consensus":null,"genre_codex":"empirical","genre_gemma":"empirical","genre_scores_codex":[0.9989719,0.00003734626,0.0001379577,0.00002169202,0.000002186212,0.000001857757,0.0001049324,0.000005332411,0.0007168191],"genre_scores_gemma":[0.9990828,0.00004070826,0.0002481598,0.00001550756,0.000003089397,0.000001335451,0.0001392337,0.00000601358,0.0004630617],"genre_candidate":"empirical","genre_consensus":"empirical","teacher_disagreement_score":0.01605377,"threshold_uncertainty_score":0.03192067,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.07642223461663909,"score_gpt":0.4018894971386915,"score_spread":0.3254672625220524,"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."}}