A JWST Medium Resolution MIRI Spectrum and Models of the Type Ia supernova 2021aefx at +415 d

C. Ashall, P. Hoeflich, E. Baron +39

We present a JWST MIRI/MRS spectrum (5-27 $\mu$m) of the Type Ia supernova (SN Ia), SN 2021aefx at $+415$ days past $B$-band maximum. The spectrum, which was obtained during t…