Universität zu Köln

Pienkina, A. O., Margules, L., Motiyenko, R. A., Mueller, H. S. P. and Guillemin, J. -C. (2017). The millimeter and sub-millimeter rotational spectrum of triple C-13-substituted ethyl cyanide. Astron. Astrophys., 601. LES ULIS CEDEX A: EDP SCIENCES S A. ISSN 1432-0746

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Abstract

Context. A recently published astronomical detection of all three doubly C-13-substituted ethyl cyanides toward Sgr B2(N2) motivated us to investigate triple C-13 isotopic species that are expected to be also present in the ISM. Aims. We aim to present an experimental study of the rotational spectrum of triple C-13-substituted ethyl cyanide, (CH3CH213)-C-13-C-13 CN, in the frequency range 150-990 GHz. We want to use the determined spectroscopic parameters for searching for (CH3CH213)-C-13-C-13 CN in ALMA data. The main objective of this work is to provide accurate frequency predictions to search for this molecule in the Galactic center source Sagittarius B2(N) and to facilitate its detection in space. Methods. The laboratory rotational spectrum of (CH3CH213)-C-13-C-13 CN has been recorded with the Lille's fast DDS solid-state spectrometer between 150 GHz and 990 GHz. Results. More than 4000 rotational transitions were identified in the laboratory. The quantum numbers reach J = 115 and K-a = 39. Watson's Hamiltonian in the A and S reductions were used to analyze the spectra. Accurate spectroscopic parameters were determined. The rotational spectra of the C-13 containing species CH3CH2CN have been assigned, thus allowing the determination of the rotational and centrifugal distortion constants

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Pienkina, A. O. UNSPECIFIED UNSPECIFIED UNSPECIFIED Margules, L. UNSPECIFIED UNSPECIFIED UNSPECIFIED Motiyenko, R. A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Mueller, H. S. P. UNSPECIFIED UNSPECIFIED UNSPECIFIED Guillemin, J. -C. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-231984
DOI:	10.1051/0004-6361/201630231
Journal or Publication Title:	Astron. Astrophys.
Volume:	601
Date:	2017
Publisher:	EDP SCIENCES S A
Place of Publication:	LES ULIS CEDEX A
ISSN:	1432-0746
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language SAGITTARIUS B2; PROPIONITRILE C2H5CN; WAVE SPECTRUM; HOT-CORE; INTERSTELLAR-MEDIUM; GRAIN CHEMISTRY; LINE SURVEY; 263 GHZ; MOLECULES; CH3CH2CN Multiple languages Astronomy & Astrophysics Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/23198