Title: Discovery of a zz ceti in the kepler mission field
Authors: Hermes, J. J ×
Mullally, Fergal
Ostensen, Roy
Williams, Kurtis A
Telting, John
Southworth, John
Bloemen, Steven
Howell, Steve B
Everett, Mark
Winget, D. E #
Issue Date: Nov-2011
Publisher: I O P Publishing Ltd.
Series Title: The Astrophysical Journal. Letters vol:741 issue:1 pages:-
Article number: L16
Abstract: We report the discovery of the first identified pulsating DA white dwarf, WD J1916+3938 (Kepler ID 4552982), in the field of the Kepler mission. This ZZ Ceti star was first identified through ground-based, time-series photometry, and follow-up spectroscopy confirms that it is a hydrogen-atmosphere white dwarf with T-eff = 11,129 +/- 115 K and log g = 8.34 +/- 0.06, placing it within the empirical ZZ Ceti instability strip. The object shows up to 0.5% amplitude variability at several periods between 800 and 1450 s. Extended Kepler observations of WD J1916+3938 could yield the best light curve, to date, of any pulsating white dwarf, allowing us to directly study the interior of an evolved object representative of the fate of the majority of stars in our Galaxy.
ISSN: 2041-8205
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Institute of Astronomy
× corresponding author
# (joint) last author

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