Excitation states of interstellar CS radio transitions and physical parameters of the L 183 nucleus

Details Excitation states of interstellar CS radio transitions and physical parameters of the L 183 nucleus Excitation states of interstellar CS radio transitions and physical parameters of the L 183 nucleus

Feb 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987azh....64...69s&link_type=abstract

Astronomicheskii Zhurnal (ISSN 0004-6299), vol. 64, Jan.-Feb. 1987, p. 69-73. In Russian.

Astronomy and Astrophysics

Astronomy

Carbon Compounds, Galactic Nuclei, Interstellar Matter, Radio Spectra, Sulfides, Astronomical Models, Gas Density, Line Spectra, Molecular Clouds

Scientific paper

The excitation states of the lowest rotational transitions of the CS molecule under the conditions of cold interstellar clouds are calculated. It is shown that, when interpreting observational data on CS radio lines, one must take into account significant deviations from local thermodynamical equilibrium. For the nucleus of L 183 the estimates are obtained of gas concentration 4 < lg nh (cm-3) < 5 and kinetic temperature 7K < Tk < 25K.

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