Old Pulsators: White Dwarfs and Their Immediate Precursors |
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| Authors: | M Sean O'Brien |
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| Institution: | (1) Astronomy Department, Yale University, PO Box 208101, New Haven, CT 06520-8101, USA |
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| Abstract: | There are now fully six classes of pulsators among white dwarfsand their immediate precursors among central stars of planetarynebulae and on the extended horizontal branch.In this review, we outline those observational and theoreticalconsiderations that link them together and set them apart fromother kinds of pulsating stars.We summarize some select astrophysical puzzles to which studiesof such pulsators might speak, and we discuss current applicationsin the fields of atomic, nuclear, and neutrino physics.Finally, we suggest how future observing programs might solve somegeneral problems common not only to the white dwarf and pre-whitedwarf pulsators but to many types of variable stars. |
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