MEASUREMENT OF THE METHYL CYANIDE E/A RATIO IN TMC-1

Authors

YC MINH
William M. Irvine, University of Massachusetts - AmherstFollow
M OHISHI
S ISHIKAWA
S SAITO
N KAIFU

Publication Date

1993

Journal or Book Title

ASTRONOMY AND ASTROPHYSICS

Abstract

We have observed the methyl cyanide (CH3CN) J = 2-1 K = 0 and 1 transitions toward the cyanopolyyne peak of TMC-1 and have derived an E/A (ortho/para)abundance ratio N(E)/N(A) = 0.75 +/- 0.10. The total methyl cyanide column density is N(total) = 5 x 10 exp 12/sq cm toward TMC-1, in agreement with earlier results from the J = 1-0 lines.

Comments

The published version is located at http://adsabs.harvard.edu/full/1993A%26A...267..229M

Pages

229-232

Volume

267

Issue

1

Recommended Citation

MINH, YC; Irvine, William M.; OHISHI, M; ISHIKAWA, S; SAITO, S; and KAIFU, N, "MEASUREMENT OF THE METHYL CYANIDE E/A RATIO IN TMC-1" (1993). ASTRONOMY AND ASTROPHYSICS. 228.
Retrieved from https://scholarworks.umass.edu/astro_faculty_pubs/228