DEUTERIUM HYPERFINE STRUCTURE IN INTERSTELLAR CYCLOPROPENYLIDENE $-d_{1} (C_{3}HO)$

The rotational transition $110 −1 01$ of the isotope $C 3 H O$ of the ubiquitous interstellar ring molecule $C 3 H 2$ was recently $i d e n t i f i e d 1$ in the interstellar molecular cloud TMC-1. New observations on a different sub-cloud of TMC-1 show fully resolved deuterium hyperfine structure of the same transition. The values of the deuterium quadrupole coupling parameters $e Q D q z z =188 k H z, n =0.053$ , appear very normal for this unique molecule. The relative intensities indicate departures from local thermal equilibrium which will be discussed.

Description

$1$ M. B. Bell, P. A. Feldman, H. E. Matthews, and L. W. Avery, Ap. J. (Letters) 311, 139 (1986).

Author Institution: Herzberg Institute of Astrophysics, National Research Council of Canada; Department of Physics and Astronomy, University of Massachusetts

URI

http://hdl.handle.net/1811/17160

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Abstracts of OSU International Symposium on Molecular Spectroscopy 1980-1989

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