EPJ Web Conf.
Volume 152, 2017Wide-Field Variability Surveys: A 21st Century Perspective – 22nd Los Alamos Stellar Pulsation – Conference Series Meeting
|Number of page(s)||5|
|Section||Past and current surveys: What we have learned, where we are standing|
|Published online||08 September 2017|
A survey of pulsating DA and DB white dwarfs Observations with the Whole Earth Telescope
1 University of Delaware, Dept. of Physics and Astronomy, Newark DE 19716, USA
2 Mt. Cuba Astronomical Observatory, Wilmington DE, USA
3 University of Texas, Dept. of Astronomy, Austin TX, USA
Published online: 8 September 2017
White dwarfs represent the end point of stellar evolution for the majority of stars. As such, they are excellent astrophysical laboratories. They are structurally simple, with electron degenerate cores surrounded by thin surface layers of helium and/or hydrogen. The g-mode pulsations provide a window into their internal structure. The Whole Earth Telescope has been conducting a long-term survey of pulsating white dwarfs with the goal of providing an empirical map of convection parameters across the DA and DB instability strips. We present an overview of white dwarf asteroseismology, and discuss the current status of our survey.
© The Authors, published by EDP Sciences, 2017
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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