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A study of C3HD in cold interstellar cloudsThe 1(10)-1(01) transition of C3HD was detected at 19.418 GHz at twelve positions in cold, dark clouds, and the D hyperfine components were resolved in two sources (L1498 and TMC-1C) well enough to derive values for the D quadrupole coupling constants. Simultaneous observations of C3H2 in each source yield relative integrated line intensities in the range 0.10-0.18, from which relative C3HD/C3H2 abundances in the range 0.05-0.15 were derived. These are among the highest deuteration ratios yet observed. Within the limits of the observational and modeling uncertainties, it is possible to explain the derived C3HD/C3H2 ratios by ion-molecule chemistry if e is equal to about 3 x 10 to the -7th.
Document ID
19880044712
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
doi:10.1086/166150
Authors
Bell, M. B. (Herzberg Inst. of Astrophysics Ottawa Ontario, Canada)
Avery, L. W. (Herzberg Inst. of Astrophysics Ottawa Ontario, Canada)
Matthews, H. E. (Herzberg Inst. of Astrophysics Ottawa Ontario, Canada)
Feldman, P. A. (Herzberg Inst. of Astrophysics Ottawa Ontario, Canada)
Watson, J. K. G. (National Research Council of Canada Herzberg Institute of Astrophysics, Ottawa, Canada)
Date Acquired
August 13, 2013
Publication Date
March 15, 1988
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 326
ISSN: 0004-637X
Subject Category
Astrophysics
Accession Number
88A31939
Funding Number(s)
CONTRACT_GRANT: NAGW-436
CONTRACT_GRANT: NSF AST-85-12903
Distribution Limits
Public
Copyright
Other

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