Abstract
On their way from the stellar center to the surface photons may be absorbed or scattered. To describe the processes of absorption and scattering one defines the concept cross section α, in surface units, e.g. cm2. A photon passing the absorbing or scattering particle at a distance smaller than the ‘crossing radius’ - the radius of the circular cross section, will be absorbed, respectively scattered.
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Literature
Cox, A.N., 1965, “ Stellar Absorption Coefficients and Opacities”, ’in Stellar Structure1, by L.H. Aller and D.B. Mc Laughlin ( University of Chicago Press)
Carson, T. R., 1976, “Stellar Opacity”, Ann. Rev. Astron. Astrophys. 14, 95
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© 1992 Springer Science+Business Media New York
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De Loore, C.W.H., Doom, C. (1992). Astrophysical Opacities. In: Structure and Evolution of Single and Binary Stars. Astrophysics and Space Science Library, vol 179. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-2502-4_6
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DOI: https://doi.org/10.1007/978-94-011-2502-4_6
Publisher Name: Springer, Dordrecht
Print ISBN: 978-0-7923-1844-6
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