Abstract
IN the simplest form of Eddington's theory of stellar constitution (vide papers in Mon. Not. R.A.S.; and Astrophysical Journal, 48, 205, 1918), the assumption is made that a certain quantity, β, is constant throughout a given star; β turns out to be the ratio of the gas-pressure to the total pressure (which is the sum of the gas-pressure and the radiation-pressure). The present note shows that the second law of thermodynamics provides a theoretical background for this assumption of Eddington's—justification of which has been largely empirical heretofore.
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STEWART, J. Gas-pressure, Radiation-pressure, and Entropy in the Interior of a Star. Nature 116, 314 (1925). https://doi.org/10.1038/116314a0
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DOI: https://doi.org/10.1038/116314a0
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