Abstract
Opacity of stellar materials with the composition and relative abundancespecified according to sun has been calculated by using an average-atomscheme, which is designed to treat electronic structures of atoms andions in a mixture. Different relative abundances of the metallicelements are considered. Comparisons between the present results andthose of OPAL are made for the opacity to show that the difference isless than 10% for most cases and less than 30% for thelargest point with the density of 1.0 g/cm3 and temperatures from 50to 6000 eV. In view of the simplicity of the present approach, it is quiteflexible to apply the method to different models of the stellarmaterials with changes in composition as well as in relative abundance.
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