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Home > Art, Film & Photography > Dwarf Novae: Wz Sagittae, Dwarf Nova, U Geminorum, Z Chamaeleontis, DM Lyrae, Z Camelopardalis, RX Andromedae
Dwarf Novae: Wz Sagittae, Dwarf Nova, U Geminorum, Z Chamaeleontis, DM Lyrae, Z Camelopardalis, RX Andromedae

Dwarf Novae: Wz Sagittae, Dwarf Nova, U Geminorum, Z Chamaeleontis, DM Lyrae, Z Camelopardalis, RX Andromedae


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Chapters: Wz Sagittae, Dwarf Nova, U Geminorum, Z Chamaeleontis, Dm Lyrae, Z Camelopardalis, Rx Andromedae. Source: Wikipedia. Pages: 24. Not illustrated. Free updates online. Purchase includes a free trial membership in the publisher's book club where you can select from more than a million books without charge. Excerpt: WZ Sagittae 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 23 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 p...More: http: //booksllc.net/?id=2162953


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Product Details
  • ISBN-13: 9781158374731
  • Publisher: Books LLC
  • Publisher Imprint: Books LLC
  • Height: 152 mm
  • Sub Title: Wz Sagittae, Dwarf Nova, U Geminorum, Z Chamaeleontis, DM Lyrae, Z Camelopardalis, RX Andromedae
  • Width: 229 mm
  • ISBN-10: 1158374739
  • Publisher Date: 15 Sep 2010
  • Binding: Paperback
  • Spine Width: 2 mm
  • Weight: 50 gr


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