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Asteroseismic constraints on the OPAL opacity interpolation

Published online by Cambridge University Press:  01 April 2008

W. M. Yang  and
M. Li
W. M. Yang
Affiliation:
Department of Physics and Chemistry, Henan Polytechnic University, Jiaozuo 454000, China email: yang.wuming@yahoo.com.cn
M. Li
Affiliation:
Department of Physics and Chemistry, Henan Polytechnic University, Jiaozuo 454000, China email: yang.wuming@yahoo.com.cn
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Abstract

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There is a difference of a few Kelvins in the effective temperature between a model used only two-point interpolation of opacity and a model used piecewise linear interpolation of opacity. However the frequency difference between the models is of the order of several microHertz at a certain stage, which is almost 10 times worse than the observational precision of p-modes of solar-like stars. Therefore, the two-point interpolation of opacity is unsuitable in modelling of solar-like stars with element diffusion.

Keywords

stars: evolutiondiffusionstars: oscillations
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 4 , Symposium S252: The Art of Modeling Stars in the 21st Century , April 2008 , pp. 123 - 124
Copyright
Copyright © International Astronomical Union 2008

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