Document Detail

Upper limits for the ethyl-cyanide abundances in TMC-1 and L134N: chemical implications.
MedLine Citation:
PMID:  11538286     Owner:  NASA     Status:  MEDLINE    
We have sought interstellar ethyl-cyanide via its 2(02)-1(01) transition towards two cold, dark clouds and report upper limits of the total column densities of 3 x 10(12) cm-2 and 2 x 10(12) cm-2 for TMC-1 and L134N, respectively. We also observed the 2(02)-1(01) transition of vinyl cyanide previously identified in TMC-1 by Matthews and Sears (1983b). The detection of vinyl cyanide and the non-detection 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.
Y C Minh; W M Irvine
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, Non-P.H.S.; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Astrophysics and space science     Volume:  175     ISSN:  0004-640X     ISO Abbreviation:  Astrophys Space Sci     Publication Date:  1991  
Date Detail:
Created Date:  1995-12-11     Completed Date:  1995-12-11     Revised Date:  2009-08-07    
Medline Journal Info:
Nlm Unique ID:  100971306     Medline TA:  Astrophys Space Sci     Country:  NETHERLANDS    
Other Details:
Languages:  eng     Pagination:  165-9     Citation Subset:  S    
Department of Physics and Astronomy, University of Massachusetts, Amherst, USA.
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MeSH Terms
Acrylonitrile / analysis*,  chemistry
Astronomical Phenomena
Extraterrestrial Environment
Models, Chemical
Nitriles / analysis*,  chemistry
Solar System*
Reg. No./Substance:
0/Nitriles; 107-12-0/propionitrile; 107-13-1/Acrylonitrile
W M Irvine / U MA, Amherst, Five Coll Radio Astronomy Observatory

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