Analysis of the oscillations in HST observations of the quiescent SU UMa type dwarf nova WZ Sagittae

An analysis of the UV oscillations in WZ Sge is presented, in which we obtain the oscillation amplitude spectra. We find a strong 27.9-s oscillation in our Hubble Space Telescope(HST) UV and zeroth-order light curves as well as weaker oscillations at 28.4 s in the UV and 29.1 s in the zeroth order....

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Veröffentlicht in:	Monthly notices of the Royal Astronomical Society 1999-12, Vol.310 (3), p.750-758
Hauptverfasser:	Skidmore, Warren, Welsh, William F., Wood, Janet H., Catalán, M. S., Horne, Keith
Format:	Artikel
Sprache:	eng
Schlagworte:	binaries: general cataclysmic variables novae novae, cataclysmic variables stars: individual: WZ Sge stars: oscillations
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Beschreibung
Zusammenfassung:	An analysis of the UV oscillations in WZ Sge is presented, in which we obtain the oscillation amplitude spectra. We find a strong 27.9-s oscillation in our Hubble Space Telescope(HST) UV and zeroth-order light curves as well as weaker oscillations at 28.4 s in the UV and 29.1 s in the zeroth order. We find that the main oscillation amplitude spectrum can be fitted with static white dwarf spectra of about 17 000 K, an accretion hotspot of only a few 100 K hotter than the underlying white dwarf temperature or a variety of cool (
ISSN:	0035-8711 1365-2966
DOI:	10.1046/j.1365-8711.1999.03003.x