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White dwarf evolution - Cradle-to-grave constraints via pulsationWhite dwarf evolution, particularly in the early phases, is not very strongly constrained by observation. Fortunately, white dwarfs undergo nonradial pulsation in three distinct regions of the H-R diagram. These pulsations provide accurate masses, surface compositional structure and rotation velocities, and help constrain other important physical properties. We demonstrate the application of the tools of stellar seismology to white dwarf evolution using the hot white dwarf star PG 1159-035 and the cool DAV (or ZZ Ceti) stars as examples. From pulsation studies, significant challenges to the theory of white dwarf evolution emerge.
Document ID
19910044315
Document Type
Conference Paper
Authors
Kawaler, Steven D. (Iowa State University of Science and Technology, Ames, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1990
Subject Category
ASTROPHYSICS
Meeting Information
Confrontation between Stellar Pulsation and Evolution(Bologna)
Funding Number(s)
CONTRACT_GRANT: NAGW-1364
Distribution Limits
Public
Copyright
Other