Limits on Planets Around White Dwarf Stars

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dc.creatorMullally, F.
dc.creatorWinget, D. E.
dc.creatorDegennaro, Steven
dc.creatorJeffery, Elizabeth
dc.creatorThompson, S. E.
dc.creatorChandler, Dean
dc.date2008-01-20
dc.date.accessioned2026-07-07T08:55:36Z
dc.date.available2026-07-07T08:55:36Z
dc.descriptionWe present limits on planetary companions to pulsating white dwarf stars. A subset of these stars exhibit extreme stability in the period and phase of some of their pulsation modes; a planet can be detected around such a star by searching for periodic variations in the arrival time of these pulsations. We present limits on companions greater than a few Jupiter masses around a sample of 15 white dwarf stars as part of an on-going survey. One star shows a variation in arrival time consistent with a 2 M_J planet in a 4.5 year orbit. We discuss other possible explanations for the observed signal and conclude that a planet is the most plausible explanation based on the data available.
dc.description19 pages, accepted for publication in ApJ
dc.identifierhttps://arxiv.org/abs/0801.3104
dc.identifierhttp://arxiv.org/abs/0801.3104
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/146320
dc.subjectAstrophysics
dc.titleLimits on Planets Around White Dwarf Stars
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