State-to-state chemistry and rotational excitation of CH${}^{+}$ in photon-dominated regions

A. Faure, P. Halvick, T. Stoecklin +9

We present a detailed theoretical study of the rotational excitation of CH${}^{+}$ due to reactive and nonreactive collisions involving C${}^{+}{(}^{2}P)$, H${}_2$, CH${}^{+}$, H and free electrons.…