EC 20058-5234, a low-amplitude pulsating DB white dwarf

Details EC 20058-5234, a low-amplitude pulsating DB white dwarf EC 20058-5234, a low-amplitude pulsating DB white dwarf

Dec 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995mnras.277..913k&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 277, Issue 3, pp. 913-919.

Astronomy and Astrophysics

Astronomy

29

Stars: Individual: Ec 20058-5234, Stars: Oscillations, White Dwarfs

Scientific paper

EC 20058-5234 is the eighth pulsating helium white dwarf to be discovered. At least eight periodicities have been observed in about 52h of high-speed photometry, the most prominent being at 281 and 257s. Many of the periodicities appear to be permanent features of the light curve, but the amplitudes vary: the strongest mode has been observed at amplitudes between 6 and 13 mmag. The star is exceptional in the group of DBVs because of both its short periods and its low amplitudes.

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