The pulsations of PG 1351+489

Monthly Notices of the Royal Astronomical Society(2011)

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摘要
PG 1351+489 is one of the 20 DBVs – pulsating helium-atmosphere white dwarf stars – known and has the simplest power spectrum for this class of star, making it a good candidate to study cooling rates. We report accurate period determinations for the main peak at 489.334 48 s and two other normal modes using data from the Whole Earth Telescope (WET) observations of 1995 and 2009. In 2009, we detect...
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关键词
stars: evolution,stars: individual: PG 1351+489,stars: oscillations,white dwarfs
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