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arXiv · 1901.08959

Opacity calculations for stellar astrophysics

Jean-Christophe Pain·Franck Gilleron
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Abstract

Opacity is a key ingredient of stellar structure and evolution. In the present work, we recall the role of opacity in asteroseismology, focusing mainly on two kinds of astrophysical objects: $\beta$ Cephei-type stars, and the Sun. The detailed opacity code SCO-RCG for local-thermodynamic-equilibrium plasmas is described and interpretation of laser and Z-pinch experiments are presented and discussed. The possible role of multi-photon processes on radiative accelerations is outlined, and the main aspects of opacity modeling which should be improved are mentioned.

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Jean-Christophe Pain, Franck Gilleron. 2019-01-24. Opacity calculations for stellar astrophysics. https://doi.org/10.5281/zenodo.1590773

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