551 citations · 2k across the 22 of their papers we have counts for
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Upper limits to interstellar NH+ and para-NH2- abundances. Herschel-HIFI observations towards Sgr B2 (M) and G10.6-0.4 (W31C)
C. M. Persson, M. Hajigholi, G. E. Hassel +12
The understanding of interstellar nitrogen chemistry has improved significantly with recent results from the Herschel Space Observatory. To set even better constraints, we report h…
Ubiquitous argonium (ArH) in the diffuse interstellar medium -- a molecular tracer of almost purely atomic gas
Peter Schilke, David A. Neufeld, Holger S. P. Müller +14
We describe the assignment of a previously unidentified interstellar absorption line to ArH and discuss its relevance in the context of hydride absorption in diffuse gas with a…
Detection of a dense clump in a filament interacting with W51e2
B. Mookerjea, C. Vastel, G. E. Hassel +8
In the framework of the Herschel/PRISMAS Guaranteed Time Key Program, the line of sight to the distant ultracompact HII region W51e2 has been observed using several selected molecu…
Widespread Rotationally-Hot Hydronium Ion in the Galactic Interstellar Medium
D. C. Lis, P. Schilke, E. A. Bergin +11
We present new observations of the (6,6) and (9,9) inversion transitions of the hydronium ion toward Sagittarius B2(N) and W31C. Sensitive observations toward Sagittarius B2(N) sho…