Title

IDENTIFICATION OF THE INTERSTELLAR CYANOMETHYL RADICAL (CH2CN) IN THE MOLECULAR CLOUDS TMC-1 AND SAGITTARIUS-B2

Publication Date

1988

Journal or Book Title

ASTROPHYSICAL JOURNAL

Abstract

The authors report the astronomical identification of the cyanomethyl radical, CH2CN, the heaviest nonlinear molecular radical to be identified in interstellar clouds. The complex fine and hyperfine structures of the lowest rotational transitions at about 20.12 and 40.24 GHz are resolved in TMC-1, where the abundance appears to be about 5×10-9 relative to that of H2. In Sgr B2 the hyperfine structure is blended in the higher frequency transitions at 40, 80, and 100 GHz, although the spin-rotation doubling is clearly evident. Preliminary searches in other sources indicate that the distribution of CH2CN is similar to that for such carbon chain species as HC3N or C4H.

Comments

The published version is located at http://adsabs.harvard.edu/doi/10.1086/185323

Volume

334

Pages

L107-L111

Issue

2

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