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Changing Abundances, Changing Opacities

Published online by Cambridge University Press:  01 April 2008

Jason W. Ferguson  and
Aaron Dotter
Jason W. Ferguson
Affiliation:
Department of Physics, Wichita State University, Wichita, KS 67260-0032, USA email: jason.ferguson@wichita.edu
Aaron Dotter
Affiliation:
Department of Physics and Astronomy, Dartmouth College, 6127 Wilder Laboratory, Hanover, NH 03755, USA email: aaron.l.dotter@dartmouth.edu
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Abstract

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With ever changing solar abundances being reported the equation of state and opacities needed for stellar evolution models also change. A discussion of those changes in mean molecular opacities will be presented with a discussion on the effect on evolution models. Aside from changing the abundances of the base mixture the enrichment changes too. Traditionally mean opacity tables are produced for oxygen-rich mixtures, however stars will often become carbon-rich. A discussion of carbon-rich opacities tables will also be presented.

Keywords

atomic processesequation of statemolecular processesstars: abundancesstars: evolution

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