UPPER LIMITS FOR THE ETHYL-CYANIDE ABUNDANCES IN TMC-1 AND L134N - CHEMICAL IMPLICATIONS

Authors

YC MINH
William M. Irvine, University of Massachusetts - AmherstFollow

Publication Date

1991

Journal or Book Title

ASTROPHYSICS AND SPACE SCIENCE

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.

Comments

The published version is located at http://www.springerlink.com/content/v4h3353528000602/

DOI

https://doi.org/10.1007/BF00644434

Pages

165-169

Volume

175

Issue

1

Recommended Citation

MINH, YC and Irvine, William M., "UPPER LIMITS FOR THE ETHYL-CYANIDE ABUNDANCES IN TMC-1 AND L134N - CHEMICAL IMPLICATIONS" (1991). ASTROPHYSICS AND SPACE SCIENCE. 243.
https://doi.org/10.1007/BF00644434