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PG 1707+427: The DOV Star with the Simplest Fourier Transform

Published online by Cambridge University Press:  12 April 2016

Albert D. Grauer ,
James Liebert  and
Richard Green
Albert D. Grauer
Affiliation:
Department of Physics andAstronomy University of Arkansas at Little Rock
James Liebert
Affiliation:
Steward Observatory University of Arizona
Richard Green
Affiliation:
Kitt Peak National Observatory National Optical Astronomy Observatories

Extract

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PG 1707+427 was identified in the Palomar-Green survey (Green Schmidt and Liebert, 1986) as an object with a significant ultraviolet excess. Observations by Bond and Grauer in 1982 showed it to be a pulsating variable (Bond, Grauer, Green and Liebert, 1984). Fourier transforms of the discovery time-series photometric runs revealed power in PG 1707+427’s light curves in two bands with periods near 450-s and 333-s. The longer period peak was observed to have a variable amplitude while the other one appeared relatively constant in strength. Wesemael, Green and Liebert (1985) placed PG 1707+427 in the spectroscopic class of PG 1159–035 (DOV) pulsating variables.

Type
Research Article
Information
International Astronomical Union Colloquium , Volume 114: White Dwarfs , 1989 , pp. 119 - 121
Copyright
Copyright © Springer-Verlag 1989

References

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