The JWST Proto-PAH Project: Detection of the methyl radical CH${}_3$ in the highly evolved C-rich object SMP LMC 011

Jialu Li, D. A. García-Hernández, A. Manchado +17

We report the first detection of the neutral methyl radical CH${}_3$ in a highly evolved C-rich object, SMP LMC 011, using JWST MIRI/MRS. CH${}_3$ is well fitted by an excitation tempe…