143 citations · 663 across the 40 of their papers we have counts for
40 papers
Millimeter and submillimeter spectroscopy of methylallene, CHCHCCH
Holger S. P. Müller, Frank Lewen, Jean-Claude Guillemin +1
Small polycyclic aromatic hydrocarbons and somewhat larger cyano derivatives were detected in the cold dark cloud TMC-1 recently. Their formation from smaller hydrocarbons is not w…
Rotational Spectroscopy as a Tool to Study Vibration-Rotation Interaction: Investigations of CHCN and CHCN up to and a Search for Transitions toward Sagittarius B2(N)
Holger S. P. Müller, Arnaud Belloche, Frank Lewen +1
Methyl cyanide, CHCN, is present in diverse regions in space, in particular in the warm parts of star-forming regions where it is a common molecule. Rotational transitions of $…
The salty emission of the intermediate-mass AGB star OH 30.1 -0.7
T. Danilovich, A. M. S. Richards, M. Van de Sande +17
We analyse continuum and molecular emission, observed with ALMA, from the dust-enshrouded intermediate-mass AGB star OH 30.1 -0.7. We find a secondary peak in the continuum maps, "…
Millimeter-millimeter-wave double-modulation double-resonance spectroscopy
Oliver Zingsheim, Luis Bonah, Frank Lewen +3
A new millimeter- to millimeter-wave double-modulation double-resonance (MMW-MMW DM-DR) scheme has been applied to record spectra of two astronomically relevant complex organic mol…
Investigation of the rotational spectrum of CHOH and its tentative detection toward Sagittarius B2(N)
Holger S. P. Müller, Vadim V. Ilyushin, Arnaud Belloche +2
Methanol is an abundant molecule in space. The column density of CHOH is in some star-forming regions so high that the search for CHOH is promising. But only very…
Rotational spectroscopy of CHOD with a reanalysis of CHOD toward IRAS 162932422
V. V. Ilyushin, H. S. P. Müller, M. N. Drozdovskaya +10
We have started a measurement campaign of numerous methanol isotopologs in low-lying torsional states in order to provide extensive line lists for radio astronomical observations f…
Millimetre and submillimetre spectroscopy of isobutene and its detection in the molecular cloud G+0.693
Mariyam Fatima, Holger S. P. Müller, Oliver Zingsheim +5
Isobutene ((CH)C=CH) is one of the four isomers of butene (CH). Given the detection of propene (CHCH=CH) toward TMC-1, and also in the warmer environmen…
Rotational spectroscopy of the thioformaldehyde isotopologues HCS and HCS in four interacting excited vibrational states and an account on the rotational spectrum of thioketene, HCCS
Holger S. P. Müller, Atsuko Maeda, Frank Lewen +3
An investigation of the rotational spectrum of the interstellar molecule thioformaldehyde between 110 and 377 GHz through a pyrolysis reaction revealed a multitude of absorption li…
Investigation of the rotational spectrum of CDOD and an astronomical search toward IRAS 162932422
V. V. Ilyushin, H. S. P. Müller, J. K. Jørgensen +8
Solar-type prestellar cores and protostars display large amounts of deuterated organic molecules. Recent findings on CHDOH and CDOH toward IRAS 16293-2422 suggest that even…
Rotation-tunneling spectrum and astrochemical modeling of dimethylamine, CHNHCH, and searches for it in space
H. S. P. Müller, R. T. Garrod, A. Belloche +6
Methylamine has been the only simple alkylamine detected in the interstellar medium for a long time. With the recent secure and tentative detections of vinylamine and ethylamine, r…
Rotational spectroscopy of oxirane-\textit{2,2}-, -CDCHO, and its tentative detection toward IRAS 162932422~B
Holger S. P. Müller, Jes K. Jørgensen, Jean-Claude Guillemin +2
We prepared a sample of oxirane doubly deuterated at one C atom and studied its rotational spectrum in the laboratory for the first time between 120~GHz and 1094~GHz. Accurate spec…
Rotational spectroscopy of mono-deuterated oxirane (-CHDO) and its detection towards IRAS 162932422 B
Holger S. P. Müller, Jes K. Jørgensen, Jean-Claude Guillemin +2
We prepared a sample of mono-deuterated oxirane and studied its rotational spectrum in the laboratory between 490 GHz and 1060 GHz in order to improve its spectroscopic parameters…
LLWP -- A new Loomis-Wood Software at the Example of Acetone-13C1
Luis Bonah, Oliver Zingsheim, Holger S. P. Müller +3
Acetone-13C1 is a complex organic molecule with two internal methyl (-CH3) rotors having relatively low effective barriers to internal rotation of about 249 cm-1. This leads to two…
Rotational spectroscopy -propanol: and conformers
O. Zingsheim, J. Maßen, H. S. P. Müller +6
The primary alcohol -propanol (i.e., -propanol or propan-1-ol; CHOH) occurs in five different conformers: , , , , and . All rotational spect…
Rotational spectroscopy of isotopic oxirane, -CHO
Holger S. P. Müller, Jean-Claude Guillemin, Frank Lewen +1
We studied the rotational spectrum of oxirane in a sample of natural isotopic composition in selected regions between 158 GHz and 1093 GHz. Investigations of the isotopologs with o…
(Sub-)millimeter-wave spectroscopy of gauche-propanal
Oliver Zingsheim, Holger S. P. Müller, Luis Bonah +3
A detailed analysis of (sub-)millimeter-wave spectra of the vibrational ground state () combined with the energetically lowest excited vibrational state ($\upsilon_{24}…
Rotational and rovibrational spectroscopy of CDOH with an account of CDOH toward IRAS 162932422
V. V. Ilyushin, H. S. P. Müller, J. K. Jørgensen +10
Solar-type protostars harbor highly deuterated complex organics. While this degree of deuteration may provide important clues in studying the formation of these species, spectrosco…
Millimeter-wave spectroscopy of the CHOD isotopic species of methyl alcohol
Li-Hong Xu, R. M. Lees, O. Zakharenko +4
The dramatic increase in sensitivity, spectral coverage and resolution of radio astronomical facilities in recent years has opened new possibilities for observation of chemical dif…
Toward a global model of the interactions in low-lying states of methyl cyanide: rotational and rovibrational spectroscopy of the state and tentative interstellar detection of the state in Sgr B2(N)
Holger S. P. Müller, Arnaud Belloche, Frank Lewen +4
New and existing rotational spectra of methyl cyanide were analyzed to extend the global model of low-lying vibrational states and their interactions to at 920 cm. T…
Rotational spectroscopy of isotopic cyclopropenone, -HCO, and determination of its equilibrium structure
Holger S. P. Müller, Ananya Brahmi M., Jean-Claude Guillemin +2
Cyclopropenone was first detected in the cold and less dense envelope of Sagittarius B2(N). It was found later in several cold dark clouds and it may be possible to detect its mino…
Rotational spectroscopy of singly C substituted isotopomers of propyne and determination of a semi-empirical equilibrium structure
Holger S. P. Müller, Sven Thorwirth, Frank Lewen
Submillimeter spectra of three isotopomers of propyne containing one C atom were recorded in natural isotopic composition in the region of 426 GHz to 785 GHz. Additional mea…
Rotational spectrum of isotopic methyl mercaptan, (13)CH3SH, in the laboratory and towards Sagittarius B2(N2)
V. V. Ilyushin, O. Zakharenko, F. Lewen +9
Methyl mercaptan (CH3SH) is a known interstellar molecule with abundances high enough that the detection of some of its minor isotopologues is promising. The present study aims at…
New laboratory techniques using heterodyne receivers
Nadine Wehres, Kirill Borisov, Katharina von Schoeler +4
Two laboratory emission spectrometers have been designed and described previously. Here, we present a follow-up study with special focus on absolute intensity calibration of the ne…
Rotational spectroscopy of methyl mercaptan CHSH at millimeter and submillimeter wavelengths
O. Zakharenko, V. V. Ilyushin, F. Lewen +8
We present a new global study of the millimeter (mm) wave, submillimeter (sub-mm) wave, and terahertz (THz) spectra of the lowest three torsional states of methyl mercaptan (CH…