Far-Ultraviolet Study of the Hot White Dwarf in the Dwarf NOVA WW Ceti
| Author(s): | Patrick Godon, Edward Sion, Paula Szkody, Laura Seward |
|---|---|
| Year of Publication: | 2006 |
| Journal Title: | Astronomical Journal |
| ISSN: | 0004-6256 |
| Volume: | 131 |
| Issue: | 5 |
| Date Name: | May 2006 |
| Language: | English |
| Start Page: | 2634 |
| Abstract: | 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 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 K providing 75% of the far-UV flux and a hotter region (accretion belt or optically thick disk ring) with K contributing 25% of the flux for the proper distance. We find from the FUSE spectrum that the white dwarf is rotating with km s−1. Our temperature results provide an additional data point in the distribution of WD Twd versus orbital period above the CV period gap, where few WD Twd values are available. |
| End Page: | 2642 |
| Subjects: |
dwarf novae—stars
individual (WW Ceti)—white dwarfs |
| Link to Full Text: | Full Text |
