FUSE Observations of the Magnetic White Dwarf EUVE J0317-855

Astronomy and Astrophysics – Astronomy

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Scientific paper

The high-field magnetic white dwarf EUVE J0317-855 is a fast rotating white dwarf (P=12 minutes) and it presents a complex field structure which we proposed to study with time-resolved spectroscopy of the HI Lyman line series using the Far Ultraviolet Spectroscopic Explorer (FUSE). We observed EUVE 0317-855 with FUSE in 2000 September for a total exposure time of ~ 18,000 s. The data were resampled in ten separate spectra each corresponding to a separate rotation phase. We present the results of a model atmosphere analysis of the FUSE spectroscopic series and discuss the implications for the origin and evolution of this unique white dwarf. S.V. is a QE II fellow of the Australian Research Council. This research is support by a NASA grant.

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