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Title:
The transformation from planetary nebula nucleus to white dwarf: A seismological study of stellar metamorphosis
Authors:
Kawaler, Steven Daniel
Affiliation:
AA(Texas Univ., Austin.)
Publication:
Ph.D. Thesis Texas Univ., Austin.
Publication Date:
00/1986
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
Astronomical Models, Planetary Nebulae, Stellar Evolution, White Dwarf Stars, Mathematical Models, Oscillations, Radiation Effects
Bibliographic Code:
1986PhDT.........2K

Abstract

The existence of several pulsating hot degenerates provides the opportunity to study this transitory stage of stellar evolution with the techniques available from the pulsation theory. A 0.40 to 0.95 solar mass stellar model from the planetary nebula nucleus (PNN) phase to the cooling white dwarf phase using a variety of techniques solve the equations of linear adiabatic nonradial oscillations for these models. Rates of period change can be used to probe the mass, structure, composition, and energy loss mechanisms of these degenerates. Also reported are preliminary results of fully nonadiabatic pulsation calculations for models of PNN. It is suggested that if hydrogen-deficient PNNs contain helium burning shells, then they should show pulsation with these periods.
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Database: Astronomy
Physics
arXiv e-prints