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Atomic Opacities

Published online by Cambridge University Press:  12 April 2016

M. J. Seaton
M. J. Seaton*
Affiliation:
Department of Physics and Astronomy, University College London, Gower St., London WC1E 6BT, UK

Extract

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Let Iv(r, θ) be the intensity of radiation of frequency v, at a distance r from the centre of a star and in a direction making an angle θ to the outward normal. In a plane-parallel approximation the equation of radiative transfer is

where 𝛋v is the opacity and jv the emissivity. The net outward flux of radiant energy is

and the flux integrated over all frequencies is

Type
Research Article
Information
International Astronomical Union Colloquium , Volume 146: Molecules in the Stellar Environment , 1994 , pp. 265 - 270
Copyright
Copyright © Springer-Verlag 1994

References

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