Influence of Scattering on the Continuous Spectrum Emitted by the Grey Atmosphere. Approximate Solution
Abstract
The Eddington approximation is used to find the monochromatic moments of the radiation field in the grey semiinfinite planeparallel atmosphere with the ratio (r) of scattering to the total opacity taken as the free parameter. The emitted spectrum is almost identical in shape with that of a black body of the same effective temperature, but is shifted to greater frequencies and therefore does not fulfil the StefanBoltzmann law. This difference increases as r approaches 1. In addition, for 1r less than 0.03, the logarithm of the frequency shift of the flux maximum is linearly related to the logarithm of (1r). The results are used for describing the spectra of supermassive stars.
 Publication:

Acta Astronomica
 Pub Date:
 1974
 Bibcode:
 1974AcA....24..327M
 Keywords:

 Atmospheric Scattering;
 Continuous Spectra;
 Eddington Approximation;
 Emission Spectra;
 Gray Gas;
 Stellar Spectra;
 Astronomical Models;
 Atmospheric Models;
 Black Body Radiation;
 Monochromatic Radiation;
 Radiative Transfer;
 Supergiant Stars;
 Astronomy