The gmodes of white dwarfs.
Abstract
The neutral gmodes of a degenerate fluid at zero temperature are analyzed. The gmodes of a degenerate fluid at finite but small temperatures are then expanded in terms of those of the zero temperature fluid. For nonrelativistic degenerate fluids it is found that (1) the geigenvalues are proportional to T mu(6)sub e mu(1)sub i, where T is the internal temperature of the fluid, mu_{e} and mu_{i} are the mean molecular weights of electrons and ions, respectively; (2) the ion pressure is solely responsible for driving the gmodes. For white dwarfs of about a solar mass, the periods of the goscillations are in the range of a few hundredths of seconds.
 Publication:

Current Problems in Stellar Pulsation Instabilities
 Pub Date:
 May 1980
 Bibcode:
 1980cpsp.book..513S
 Keywords:

 Astrophysics;
 Stellar Luminosity;
 Variable Stars;
 White Dwarf Stars;
 Adiabatic Equations;
 Degeneration;
 Equations Of Motion;
 Isothermal Processes;
 Periodic Variations;
 RayleighRitz Method;
 Stellar Mass;
 Stellar Models;
 Stellar Temperature;
 Astrophysics;
 Oscillations:White Dwarfs;
 Periods:White Dwarfs