THE FIRST ASTROPHYSICAL DETECTION, TERAHERTZ SPECTRUM, AND DATABASE FOR THE MONODEUTERATED SPECIES OF METHYL FORMATE HCOOCH sub(2)D

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 a...

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Bibliographic Details
Published in:The Astrophysical journal 2013-12, Vol.779 (2), p.1-11
Main Authors: Coudert, L H, Drouin, B J, Tercero, B, Cernicharo, J, Guillemin, J-C, MOTIYENKO, R A, Margules, L
Format: Article
Language:English
Subjects:
Construction
Joining
Lists
Mathematical models
Methyl formate
Orion nebula
Tunneling
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Summary: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.
ISSN:0004-637X
1538-4357
DOI:10.1088/0004-637X/779/2/119