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| Paper: |
The ZZ Leporis Stars: Wind-variable Central Stars of Young Planetary Nebulae |
| Volume: |
469, 18th European White Dwarf Workshop (EUROWD12) |
| Page: |
271 |
| Authors: |
Handler, G.; Prinja, R. K.; Antoci, V.; Urbaneja, M. A. |
| Abstract: |
The ZZ Leporis stars comprise a good dozen PN central stars with effective
temperatures around 40000 K. Whereas their photometric and spectroscopic
variability has been known for over 25 years, an unambiguous
interpretation of its cause has not yet been possible. New observations of
the central star of NGC 6826, a known ZZ Lep star, with the Kepler
spacecraft, resolve this problem. The variability is caused by density
enhancements in the stellar wind; rotational light variations are present
in addition. We present the Kepler light curves and discuss the ZZ Lep
stars as a class. |
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