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Cyanide and isocyanide abundances in the cold, dark cloud TMC-1Cold, dark molecular clouds are particularly useful for the study of interstellar chemistry because their physical parameters are better understood than those of heterogeneous, complex giant molecular clouds. Another advantage is their relatively small distance from the solar system. The present investigaation has the objective to provide accurate abundance ratios for several cyanides and isocyanides in order to constrain models of dark cloud chemistry. The relative abundances of such related species can be particularly useful for the study of chemical processes. The cloud TMC-1 considered in the current study has a remarkably high abundance of acetylene and polyacetylene derivatives. Data at 3 mm, corresponding to the J = 1 to 0 transitions of HCN, H(C-13)N, HN(C-13), HC(N-15), and H(N-15)C were obtained.
Document ID
19840061557
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Irvine, W. M.
(Massachusetts, University Amherst, MA, United States)
Schloerb, F. P.
(Five College Radio Astronomy Observatory Amherst, MA, United States)
Date Acquired
August 12, 2013
Publication Date
July 15, 1984
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 282
ISSN: 0004-637X
Subject Category
Astrophysics
Accession Number
84A44344
Funding Number(s)
CONTRACT_GRANT: NAGW-436
CONTRACT_GRANT: NSF AST-82-12252
Distribution Limits
Public
Copyright
Other

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