Detection of the J = 1 - 0 transition of CH3CN

Details Detection of the J = 1 - 0 transition of CH3CN Detection of the J = 1 - 0 transition of CH3CN

Apr 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...267l..53m&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 267, Apr. 1, 1983, p. L53-L57.

Other

37

Acetonitrile, Cyanides, Electron Transitions, Interstellar Matter, Methyl Compounds, Molecular Clouds, Emission Spectra, Hyperfine Structure, Molecular Rotation, Molecular Spectra

Scientific paper

The first detection of the J = 1 - 0 transition of CH3CN at 18.4 GHz in the dark cloud TMC-1 and the complex molecular cloud Sgr B2 is reported. This is the first time that CH3CN has been seen in a cold dust cloud and that the hyperfine structure of a transition of this molecule has been resolved in space. A column density N(CH3CN) of 7 x 10 to the 12th/sq cm is found in TMC-1, comparable to that of many other molecules there. In Sgr B2 the emission shows self-absorption in two of the hyperfine components.

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