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- Q2356324 subject Q7009469.
- Q2356324 subject Q7217183.
- Q2356324 subject Q8395318.
- Q2356324 subject Q8691170.
- Q2356324 abstract "WZ Sagittae (WZ Sge) is a cataclysmic dwarf nova star system in the Sagitta constellation. It consists of a white dwarf primary being orbited by a low mass companion. The white dwarf is about 0.85 solar masses while the companion is only 0.08 solar masses. This implies that the companion is a spectral class L2 star, although this has yet to be confirmed. The distance to this system has been determined by parallax measurements using the fine guidance sense on the Hubble Space Telescope, yielding a distance of 43.5 parsecs.WZ Sagittae is an ultrashort period cataclysmic nova, with outbursts observed in 1913, 1946, 1978 and 2001. During the well-observed 2001 outburst, the nova reached a peak visual magnitude of 8.21. The 1913 event was the brightest of the observed outbursts, reaching a photographic magnitude of 7.0.This nova is classified as a SU Ursae Majoris class star, which is a subclass of dwarf nova that produces what are termed superoutbursts spaced several months apart, interspaced with normal outbursts every few weeks. The normal outbursts typically last 2−3 days, while a superoutburst lasts a few weeks. However, WZ Sagittae is unusual in that it is only observed to emit superbursts.The outbursts of a dwarf nova are caused when matter from a ring-like accretion disk becomes unstable. In this system, the companion star is sufficiently close to the white dwarf that the tidal bulge of the former overlaps the Roche limit, allowing matter to pass across and accumulate onto the disk. When the disk reaches a critical temperature, the gas collapses onto the white dwarf resulting in the release of gravitational potential energy.A superoutburst may be caused by a tidal interaction of the accretion disk with the donor star, resulting in a greater deposition of matter on the white dwarf. In the case of WZ Sagittae, however, magnetic effects may act to enhance the deposition, resulting in the lack of normal outbursts. Because of the unique timing differences in the rate of superoutbursts of this nova, it been designated the prototype star for a WZ Sagittae subclass.The orbital period of this system is 1.361 hours. Based upon observations of eclipses of the hot spot on the white dwarf (created by infalling material), the orbital plane of this system is inclined by 76° ± 6° to the line of sight from the Earth.".
- Q2356324 wikiPageExternalLink vsots_wzsge.
- Q2356324 wikiPageExternalLink ql.
- Q2356324 wikiPageExternalLink 0901.pdf.
- Q2356324 wikiPageWikiLink Q10513.
- Q2356324 wikiPageWikiLink Q1059564.
- Q2356324 wikiPageWikiLink Q11412.
- Q2356324 wikiPageWikiLink Q124313.
- Q2356324 wikiPageWikiLink Q1322559.
- Q2356324 wikiPageWikiLink Q155640.
- Q2356324 wikiPageWikiLink Q165074.
- Q2356324 wikiPageWikiLink Q180892.
- Q2356324 wikiPageWikiLink Q2.
- Q2356324 wikiPageWikiLink Q232086.
- Q2356324 wikiPageWikiLink Q244264.
- Q2356324 wikiPageWikiLink Q2513.
- Q2356324 wikiPageWikiLink Q5871.
- Q2356324 wikiPageWikiLink Q7009469.
- Q2356324 wikiPageWikiLink Q7217183.
- Q2356324 wikiPageWikiLink Q8395318.
- Q2356324 wikiPageWikiLink Q8691170.
- Q2356324 type Place.
- Q2356324 type CelestialBody.
- Q2356324 type Location.
- Q2356324 type Place.
- Q2356324 type Star.
- Q2356324 type Thing.
- Q2356324 comment "WZ Sagittae (WZ Sge) is a cataclysmic dwarf nova star system in the Sagitta constellation. It consists of a white dwarf primary being orbited by a low mass companion. The white dwarf is about 0.85 solar masses while the companion is only 0.08 solar masses. This implies that the companion is a spectral class L2 star, although this has yet to be confirmed.".
- Q2356324 label "WZ Sagittae".
- Q2356324 name "WZ Sagittae A/B".