{"paper":{"title":"JWST MIRI/MRS Observations and Spectral Models of the Under-luminous Type Ia Supernova 2022xkq","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.HE","authors_text":"A. Burrow, A. Cikota, A. Do, B. J. Shappee, C. Ashall, C. M. Telesco, C. P. Stevens, C. R. Burns, D. Baade, D. Janzen, E. Baron, E. F Balangan, E. T. Hoang, E. Y. Hsiao, F. Patat, I. Dominguez, J. Andrews, J. E. Jencson, J. Lu, J. M. DerKacy, J. Pearson, J. R. Maund, K. A. Bostroem, K. Krisciunas, K. Medler, L. Galbany, L. Wang, M. A. Tucker, M. D. Stritzinger, M. Lundquist, M. M. Phillips, M. Shahbandeh, M. Shrestha, N. B. Suntzeff, N. E. Meza Retamal, N. Morrell, O. Fox, P. Hoeflich, P. J. Brown, P. Mazzali, S. Kumar, S. Stangl, S. Valenti, T. B. Mera Evans, T. de Jaeger, Y. Dong, Y. Yang","submitted_at":"2023-10-13T14:48:23Z","abstract_excerpt":"We present a JWST mid-infrared spectrum of the under-luminous Type Ia Supernova (SN Ia) 2022xkq, obtained with the medium-resolution spectrometer on the Mid-Infrared Instrument (MIRI) $\\sim130$ days post-explosion. We identify the first MIR lines beyond 14 $\\mu$m in SN Ia observations. We find features unique to under-luminous SNe Ia, including: isolated emission of stable Ni, strong blends of [Ti II], and large ratios of singly ionized to doubly ionized species in both [Ar] and [Co]. Comparisons to normal-luminosity SNe Ia spectra at similar phases show a tentative trend between the width of "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2310.09153","kind":"arxiv","version":2},"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/2310.09153/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"}