SIMBAD references

2006AJ....131.2634G - Astron. J., 131, 2634-2642 (2006/May-0)

A far-ultraviolet study of the hot white dwarf in the dwarf nova WW Ceti.

GODON P., SEWARD L., SION E.M. and SZKODY P.

Abstract (from CDS):

We present a synthetic spectral analysis of IUE archival and FUSE (Far Ultraviolet Spectroscopic Explorer) far-UV spectra of the peculiar dwarf nova WW Cet. During the quiescence of WW Cet, a white dwarf with Twd∼26,000±1000 K can account for the far-UV flux and yields the proper distance. However, the best agreement with the observations is provided by a two-temperature white dwarf model with a cooler white dwarf at Twd=25,000 K providing 75% of the far-UV flux and a hotter region (accretion belt or optically thick disk ring) with T=40,000 K contributing 25% of the flux for the proper distance. We find from the FUSE spectrum that the white dwarf is rotating with Vsini=600±100 km/s. Our temperature results provide an additional data point in the distribution of WD Twdversus orbital period above the CV period gap, where few WD Twdvalues are available.

Abstract Copyright:

Journal keyword(s): stars: dwarf novae - stars: individual (WW Ceti) - Stars: White Dwarfs

Simbad objects: 10

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