Opacity calculations for stellar astrophysics
Solar and Stellar Astrophysics
2019-04-30 v1
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: 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.
Cite
@article{arxiv.1901.08959,
title = {Opacity calculations for stellar astrophysics},
author = {Jean-Christophe Pain and Franck Gilleron},
journal= {arXiv preprint arXiv:1901.08959},
year = {2019}
}
Comments
Proceedings of the PHOST "Physics of Oscillating Stars" conference, 2-7 Sept. 2018, Banyuls-sur-mer (France). arXiv admin note: text overlap with arXiv:1802.00782