Detection of OH${}^{+}$ and H${}_2$O${}^{+}$ towards Orion~KL

H. Gupta, P. Rimmer, J. C. Pearson +76

We report observations of the reactive molecular ions OH${}^{+}$, H${}_2$O${}^{+}$, and H${}_3$O${}^{+}$ towards Orion KL with Herschel/HIFI. All three $N=1-0$ fine-structure transitions of OH${}^{+}$…