Browse Abstracts & Presentations - 2021 International Symposium on Molecular Spectroscopy by Subject "Astronomy"

• (International Symposium on Molecular Spectroscopy, 2021-06-24)
Benzonitrile (\chem{C_6H_5CN}), a polar proxy for benzene (\chem{C_6H_6}), has the potential to serve as a highly convenient radio probe for aromatic chemistry, provided this ring can be found in other astronomical sources ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-23)
The study of not only amino acids but its most essential isomers should be of crucial importance for revealing the chemical processes that may have led to life's origin. We here report the first structural characterization ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-22)
Hydrides are important molecular constituents of the interstellar and circumstellar media, but there are still many questions regarding their variety and formation. In the envelopes of asymptotic giant branch and red ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-22)
We present a line survey of the cold dark core TMC-1 carried out with the YEBES 40m radio telescope in the Q-band. A new set of receivers have been installed in the telescope within the frame of the ERC synergy Nanocosmos ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-24)
The CDMS\footnote{Shortcut: cdms.de; web address: https://cdms.astro.uni-koeln.de/. The CDMS is supported by the Verbundforschung Physik of the BMBF (German Ministry of Science and Education), project ID 05A17PK1.} was ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-22)
Magnetic fields are thought to play a crucial role in the formation and evolution of protoplanetary disks by providing a means of angular momentum transport. However, finding observational evidence for the presence of ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-25)
Early {\em ab initio} calculations\footnote{Saeb\o, Radom, and Schaefer, {\em J.\ Chem.\ Phys.}~{\bf 78} (1983) 845; Marenich and Boggs, {\em J.\ Chem.\ Phys.}~{\bf 119} (2003) 3098; and Ibid., {\em J.\ Chem.\ Phys.}~{\bf ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-24)
Since the first molecules were detected in space, we have now reached a point where chemical and physical complexity in the interstellar medium reaches the boundaries of what human expertise and intuition alone can achieve. ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-24)
SO is an important radical found in many astronomical sources such as the atmosphere of Io and the atmosphere of Venus. In order to create more complete line lists, we fit spectroscopic data on SO from the literature using ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-22)
Oxygen-rich supergiant stars undergo intense, sporadic mass loss often causing them to have highly directed, non-isotropic outflows. These outflows have been previously identified in the envelope of the supergiant VY CMa, ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-24)
Out of the more than 200 individual molecular species already identified in the ISM, nearly 16\% of the molecules contain a cyano functional group (see www.astro.uni-koeln.de/cdms/molecules). An interesting extension to ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-22)
Large difference of chemical compositions between molecular clouds and comets is a big question for astrochemistry. The case of a pre-biotic molecule \chem{CH_3NCO} is one of them. The abundance ratio of [\chem{CH_3NCO}] ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-25)
Nitrogen-containing heterocycles pose an intriguing astrochemical mystery. 45 different varieties have been detected on meteorites with non-terrestrial isotopic abundances, but none have been detected in space, despite ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-22)
The cyanide and isocyanide (-\chem{CN} and -\chem{NC}) pairs of isomers have been used regularly to probe the physical conditions and history of interstellar sources and to improve the accuracy and predictive power of ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-25)
More than 200 molecules have so far been detected in the interstellar medium (ISM), of which close to one third are complex organic molecules containing six or more atoms. Over the last decades, laboratory experiments ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-23)
Oxiranecarbonitrile (cyano-oxirane, c-C$_{2}$H$_{3}$OCN) is of interest as a possible chiral precursor molecule of evolution$\footnote{M. Bolli, R. Micura, A. Eschenmoser, \emph{Chem. Biol.}, \textbf{1997}, 4, 309 (and ... application/pdf PDF (408kB) • (International Symposium on Molecular Spectroscopy, 2021-06-23) S-type stars are characterized by the presence of ZrO electronic transitions. Analysis of several ZrO band systems has, to date, relied upon data collected using photographic plates and has escaped a more modern spectral ... application/pdf PDF (218kB) • (International Symposium on Molecular Spectroscopy, 2021-06-25) From an astrochemical point of view ketenimine (CH$_2$CNH) is a complex organic molecule (COM) and therefore likely to be a building block for biologically relevant molecules. Since it has been detected in the star-forming ... application/pdf PDF (382kB) • (International Symposium on Molecular Spectroscopy, 2021-06-23) We report the observation and assignment of the rotational spectra of the isotopically chiral molecule, trans-2,3-dideutero-oxirane (c-CHD-CHDO) measured in the gigahertz range of 62-110 GHz and in the terahertz range, ... application/pdf PDF (168kB) • (International Symposium on Molecular Spectroscopy, 2021-06-23) \begin{wrapfigure}{r}{0pt} \includegraphics[scale=0.7]{Figure99.eps} \caption{Portions of the recorded MIR spectra (black traces): 1930-2300~cm$^{-1}$, 2500-2700~cm$^{-1}$and 3250-3400~cm$^{-1}\$. Spectral simulations based ...

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