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Upper limits for the ethyl-cyanide abundances in TMC-1 and L134N - Chemical implicationsInterstellar ethyl-cyanide has been sought via its 2(02)-1(01) transition towards two cold, dark clouds, and upper limits of the total column densities of 3 x 10 to the 12th/sq cm and 2 x 10 to the 12th/sq cm for TMC-1 and L134N, respectively. The 2(02)-1(01) transition of vynil cyanide, previously identified in TMC-1 by Matthews and Sears (1983b), was also observed. The detection of vinyl cyanide and the nondetection of ethyl cyanide in TMC-1 are consistent with gas phase ion-molecule chemical models, and there is thus no necessity of invoking grain surface synthesis for vinyl cyanide in cold clouds.
Document ID
19910043827
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Minh, Y. C.
(Five College Radio Astronomy Observatory Amherst, MA, United States)
Irvine, W. M.
(Five College Radio Astronomy Observatory, Amherst, MA; Nobeyama Radio Observatory Minamimaki, Japan)
Date Acquired
August 14, 2013
Publication Date
January 1, 1991
Publication Information
Publication: Astrophysics and Space Science
Volume: 175
Issue: 1 Ja
ISSN: 0004-640X
Subject Category
Astrophysics
Accession Number
91A28450
Funding Number(s)
CONTRACT_GRANT: NAGW-436
CONTRACT_GRANT: NSF AST-88-15406
Distribution Limits
Public
Copyright
Other

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