Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980cpsp.book..513s&link_type=abstract
In NASA. Goddard Space Flight Center Current Probl. in Stellar Pulsation Instabilities p 513-531 (SEE N80-25229 15-90)
Astronomy and Astrophysics
Astrophysics
Astrophysics, Stellar Luminosity, Variable Stars, White Dwarf Stars, Adiabatic Equations, Degeneration, Equations Of Motion, Isothermal Processes, Periodic Variations, Rayleigh-Ritz Method, Stellar Mass, Stellar Models, Stellar Temperature
Scientific paper
The neutral g-modes of a degenerate fluid at zero temperature are analyzed. The g-modes 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 g-eigenvalues are proportional to T mu(6)sub e mu(-1)sub i, where T is the internal temperature of the fluid, mue and mui are the mean molecular weights of electrons and ions, respectively; (2) the ion pressure is solely responsible for driving the g-modes. For white dwarfs of about a solar mass, the periods of the g-oscillations are in the range of a few hundredths of seconds.
Dixit Vishal
Khajehpour R. H. M.
Sobouti Yousef
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