Hyperfine excitation of CN by He

Details Hyperfine excitation of CN by He Hyperfine excitation of CN by He

May 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011mnras.413l..20l&link_type=abstract

Monthly Notices of the Royal Astronomical Society: Letters, Volume 413, Issue 1, pp. L20-L23.

Astronomy and Astrophysics

Astronomy

6

Molecular Data, Molecular Processes, Scattering

Scientific paper

Modelling of molecular emission spectra from interstellar clouds requires the calculation of rates for excitation by collisions with the most-abundant species. We calculate hyperfine structure resolved excitation rate coefficients of the cyano radical (CN) by He. State-to-state rate coefficients between the 37 lowest hyperfine levels of CN were calculated for low temperatures in the range 5-30 K. The new rate coefficients will help significantly in the interpretation of the CN emission lines observed with current and future telescopes, and enable this molecule to become a powerful astrophysical tool.

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