Diffusion of radiation in two gaseous clouds

Details Diffusion of radiation in two gaseous clouds Diffusion of radiation in two gaseous clouds

Oct 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976velen......131v&link_type=abstract

Leningradskii Universitet, Vestnik, Matematika, Mekhanika, Astronomiia, Oct. 1976, p. 131-138. In Russian.

Astronomy and Astrophysics

Astronomy

Atomic Energy Levels, Diffuse Radiation, Gaseous Diffusion, Interstellar Gas, Absorptivity, Atomic Excitations, Binary Stars, H Ii Regions, Integral Equations, Optical Thickness, Planetary Atmospheres, Stellar Atmospheres

Scientific paper

The paper examines diffusion of radiation in two moving gaseous clouds both composed of two-level atoms, but with different absorption coefficients, different optical thicknesses in the center of the line and different temperatures. Systems of integral equations are obtained in the one-dimensional approximation for source functions and the intensity of outgoing radiation. The discussion is relevant to the study of such media as the atmospheres of binary stars, interstellar clouds, and H I and H II regions in planetary nebulae.

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