The first astrophysical detection, terahertz spectrum, and database for the monodeuterated species of methyl formate HCOOCH{sub 2}D

Journal Article · Fri Dec 20 00:00:00 EST 2013 · Astrophysical Journal

DOI:https://doi.org/10.1088/0004-637X/779/2/119· OSTI ID:22348455

Coudert, L. H. ^[1]; Drouin, B. J. ^[2]; Tercero, B.; Cernicharo, J. ^[3]; Guillemin, J. -C. ^[4]; Motiyenko, R. A.

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1. LISA, UMR 7583 CNRS-Universités Paris Est Créteil et Paris Diderot, 61 Avenue du Général de Gaulle, F-94010 Créteil (France)
2. Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109 (United States)
3. Centro de Astrobiologia (CSIC-INTA), Laboratory of Molecular Astrophysics, Department of Astrophysics, Ctra de Ajalvir, Km 4, E-28850 Torrejón de Ardoz, Madrid (Spain)
4. Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS-ENSCR, 11 Allée de Beaulieu, CS 50837, F-35708 Rennes Cedex 7 (France)

Based on new measurements carried out in the laboratory from 0.77 to 1.2 THz and on a line-frequency analysis of these new data, along with previously published data, we build a line list for HCOOCH{sub 2}D that leads to its first detection in the Orion KL nebula. The observed lines, both in space and in the laboratory, involve the cis D-in-plane and trans D-out-of-plane conformations of HCOOCH{sub 2}D and the two tunneling states arising from the large-amplitude motion connecting the two trans configurations. The model used in the line position calculation accounts for both cis and trans conformations, as well as the large-amplitude motion.

• OSTI ID: 22348455
• Journal Information: Astrophysical Journal, Vol. 779, Issue 2; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
AMPLITUDES
ASTROPHYSICS
DATA ANALYSIS
DETECTION
FREQUENCY ANALYSIS
GALAXIES
MOLECULES
NEBULAE
SPACE
SPECTRA
TUNNEL EFFECT