The millimeter and sub-millimeter rotational ...
Document type :
Compte-rendu et recension critique d'ouvrage
Title :
The millimeter and sub-millimeter rotational spectrum of triple 13C-substituted ethyl cyanide
Author(s) :
Pienkina, A.O. [Auteur]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]
Margulès, L., [Auteur correspondant]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]
Motiienko, Roman [Auteur]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]
Müller, H.S.P. [Auteur]
I. Physikalisches Institut [Köln]
Guillemin, J.-C., [Auteur]
Institut des Sciences Chimiques de Rennes [ISCR]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]
Margulès, L., [Auteur correspondant]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]
Motiienko, Roman [Auteur]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]
Müller, H.S.P. [Auteur]
I. Physikalisches Institut [Köln]
Guillemin, J.-C., [Auteur]
Institut des Sciences Chimiques de Rennes [ISCR]
Journal title :
Astronomy and Astrophysics - A&A
Pages :
A2
Publisher :
EDP Sciences
Publication date :
2017-05
ISSN :
0004-6361
English keyword(s) :
ISM: molecules
line: identification
methods: laboratory: molecular
molecular data
submillimeter: ISM
techniques: spectroscopic
line: identification
methods: laboratory: molecular
molecular data
submillimeter: ISM
techniques: spectroscopic
HAL domain(s) :
Planète et Univers [physics]/Astrophysique [astro-ph]
Chimie/Autre
Chimie/Autre
English abstract : [en]
Context. A recently published astronomical detection of all three doubly 13C-substituted ethyl cyanides toward Sgr B2(N2) motivated us to investigate triple 13C isotopic species that are expected to be also present in the ...
Show more >Context. A recently published astronomical detection of all three doubly 13C-substituted ethyl cyanides toward Sgr B2(N2) motivated us to investigate triple 13C 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 13C-substituted ethyl cyanide, 13CH3 13CH2 13CN, in the frequency range 150-990 GHz. We want to use the determined spectroscopic parameters for searching for 13CH3 13CH2 13CN 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 13CH3 13CH2 13CN 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 Ka = 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 13C containing species CH3CH2CN have been assigned, thus allowing the determination of the rotational and centrifugal distortion constants © ESO, 2017.Show less >
Show more >Context. A recently published astronomical detection of all three doubly 13C-substituted ethyl cyanides toward Sgr B2(N2) motivated us to investigate triple 13C 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 13C-substituted ethyl cyanide, 13CH3 13CH2 13CN, in the frequency range 150-990 GHz. We want to use the determined spectroscopic parameters for searching for 13CH3 13CH2 13CN 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 13CH3 13CH2 13CN 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 Ka = 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 13C containing species CH3CH2CN have been assigned, thus allowing the determination of the rotational and centrifugal distortion constants © ESO, 2017.Show less >
Language :
Anglais
Popular science :
Non
Source :
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