Difference between revisions of "Triggers:CVs"

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(Created page with 'There is a very large variety of behaviours of CVs. == VY Sculptoris == A subclass of cataclysmic variables exhibiting occasional drops by several magnitudes at irregular interv...')
 
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* some of VY Scl stars are supersoft X-ray sources during optical low-states.
 
* some of VY Scl stars are supersoft X-ray sources during optical low-states.
  
[Figure: CV-VYScl.png]
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[[Figure: CV-VYScl.png]]

Revision as of 10:58, 6 October 2009

There is a very large variety of behaviours of CVs.

VY Sculptoris

A subclass of cataclysmic variables exhibiting occasional drops by several magnitudes at irregular intervals. The prototype of the class had shown a deep low-state in 2008, first since 1983 (Greiner et al. 2009).

  • amplitude: several magnitudes
  • drop time scale: 10-30 days
  • low state lasts for about 100 days
  • some periodicity (P about 10 days) is present
  • mechanism not well understood
  • some of VY Scl stars are supersoft X-ray sources during optical low-states.

Figure: CV-VYScl.png