Far-Infrared Rotational Transition Lines of the Interstellar Water Vapor

Details Far-Infrared Rotational Transition Lines of the Interstellar Water Vapor Far-Infrared Rotational Transition Lines of the Interstellar Water Vapor

Jan 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983pthph..69...77s&link_type=abstract

Progress of Theoretical Physics, Vol. 69, No. 1, pp. 77-88

Physics

1

Scientific paper

Far-infrared rotational transition lines of H2O vapor are calculated to predict the line intensities under the condition of interstellar molecular clouds. Fractional populations for ortho- and para-H2O molecules are obtained by solving a statistical equilibrium equation in which we employ recent data of H2O-H2 collisional excitation coefficients. Results are shown by presenting excitation temperature and optical depth for representative transition lines. Predicted intensities of several far-infrared lines are also demonstrated for a simplified cloud model.

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