90 citations · 437 across the 15 of their papers we have counts for
8 papers · 1 filter
PDRs4All XV: CH radical and H molecular ion in the irradiated protoplanetary disk d203-506
I. Schroetter, O. Berné, J. R. Goicoechea +20
Most protoplanetary disks experience a phase in which they are subjected to strong ultraviolet radiation from nearby massive stars. This UV radiation can substantially alter their…
Formation of the Methyl Cation by Photochemistry in a Protoplanetary Disk
Olivier Berné, Marie-Aline Martin-Drumel, Ilane Schroetter +53
Forty years ago it was proposed that gas phase organic chemistry in the interstellar medium was initiated by the methyl cation CH3+, but hitherto it has not been observed outside t…
Discovery of HCCCH in TMC-1
W. G. D. P. Silva, J. Cernicharo, S. Schlemmer +13
Based on a novel laboratory method, 14 mm-wave lines of the molecular ion HCCCH have been measured in high resolution, and the spectroscopic constants of this asymmetric ro…
Accurate rotational rest frequencies for ammonium ion isotopologues
José-Luis Doménech, Stephan Schlemmer, Oskar asvany
We report rest frequencies for rotational transitions of the deuterated ammonium isotopologues NH3D+, NH2D2+ and NHD3+, measured in a cryogenic ion trap machine. For the symmetric…
First laboratory detection of vibration-rotation transitions of CH and CH and improved measurement of their rotational transition frequencies
José L. Doménech, Pavol Jusko, Stephan Schlemmer +1
The long-searched C-H stretches of the fundamental ions CH and CH have been observed for the first time in the laboratory. For this, the state-dependent attachment o…
Accurate frequency determination of vibration-rotation and rotational transitions of SiH+
José L. Doménech, Stephan Schlemmer, Oskar Asvany
The fundamental 28SiH+ ion has been characterized in a collaborative work, utilizing a hollow-cathode-discharge laser-spectrometer and a cryogenic ion trap spectrometer. Twenty-thr…
Detection of interstellar ortho-D2H+ with SOFIA
Jorma Harju, Olli Sipilä, Sandra Brünken +9
We report on the detection of the ground-state rotational line of ortho-D2H+ at 1.477 THz (203 micron) using the German REceiver for Astronomy at Terahertz frequencies (GREAT) onbo…
Modelling line emission of deuterated H_3^+ from prestellar cores
O. Sipilä, E. Hugo, J. Harju +3
Context: The depletion of heavy elements in cold cores of interstellar molecular clouds can lead to a situation where deuterated forms of H_3^+ are the most useful spectroscopic pr…