310 citations · 6.5k across the 139 of their papers we have counts for
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The upGREAT 1.9 THz multi-pixel high resolution spectrometer for the SOFIA Observatory
C. Risacher, R. Guesten, J. Stutzki +19
We present a new multi-pixel high resolution (R >10^7) spectrometer for the Stratospheric Observatory for Far-Infrared Astronomy (SOFIA). The receiver uses 2 x 7-pixel subarrays in…
The ionization rates of galactic nuclei and disks from Herschel/HIFI observations of water and its associated ions
Floris van der Tak, Axel Weiss, Lijie Liu +1
(Abridged) We present Herschel/HIFI spectra of the H2O 1113 GHz and H2O+ 1115 GHz lines toward five nearby prototypical starburst/AGN systems, and OH+ 971 GHz spectra toward three…
[CII] 158m and [NII] 205m emission from IC 342 - Disentangling the emission from ionized and photo-dissociated regions
Markus Röllig, R. Simon, R. Güsten +3
Aims: We investigate how much of the [CII] emission in the nucleus of the nearby spiral galaxy IC 342 is contributed by PDRs and by the ionized gas. We examine the spatial variatio…
Deuteration of ammonia in the starless core Ophiuchus/H-MM1
Jorma Harju, Fabien Daniel, Olli Sipilä +13
Ammonia and its deuterated isotopologues probe physical conditions in dense molecular cloud cores. With the aim of testing the current understanding of the spin-state chemistry of…
Far-infrared study of tracers of oxygen chemistry in diffuse clouds
H. Wiesemeyer, R. Güsten, S. Heyminck +8
Context. The chemistry of the diffuse interstellar medium rests upon three pillars: exothermic ion-neutral reactions (" cold chemistry "), endothermic neutral-neutral reactions wit…
The NHD hyperfine structure revealed by astrophysical observations
F. Daniel, L. H. Coudert, A. Punanova +8
The 1-1 lines of ortho and para--NHD (o/p-NHD), respectively at 86 and 110 GHz, are commonly observed to provide constraints on the deuterium fractionation in…