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Upper limits for the ethyl-cyanide abundances in TMC-1 and L134N: Chemical implications (1991)

Minh, Y. C. ; Irvine, W. M.

Springer

Astrophysics and space science 175 (1991), S. 165-169

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ISSN: 1572-946X

Source: Springer Online Journal Archives 1860-2000

Topics: Physics

Notes: Abstract We have sought interstellar ethyl-cyanide via its 202–101 transition towards two cold, dark clouds and report upper limits of the total column densities of 3×1012cm−2 and 2×1012cm−2 for TMC-1 and L134N, respectively. We also observed the 202–101 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.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00644434

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