The equation of state and the frequencies of solar P modes.
Abstract
Solar interior models are calculated with and without the electrostatic interaction in the equation of state. The ionization equilibria of hydrogen and helium and the equation of state are derived in a consistent manner from a minimization of the free energy, and the electrostatic effects the pressure and the partition functions for bound electrons are considered in the Debye-Hueckel treatment, essentially following Daeppen (1980). It is shown that the eigenfrequencies of the solar model which includes the electrostatic interaction agree better with the frequencies of observed solar oscillations than those of the model without electrostatic interaction.
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- June 1990
- Bibcode:
- 1990A&A...232..234S
- Keywords:
-
- Debye-Huckel Theory;
- Electrostatic Waves;
- Equations Of State;
- Ionized Gases;
- Solar Interior;
- Solar Oscillations;
- Helium Ions;
- Hydrogen Ions;
- Reaction Kinetics;
- Stellar Evolution;
- Solar Physics