Difference between revisions of "Triggers:CVs"
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There is a very large variety of behaviours of CVs. | There is a very large variety of behaviours of CVs. | ||
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| + | [[File:Types-of-CVs.png|400px|]] | ||
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== VY Sculptoris == | == VY Sculptoris == | ||
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[[File:CV-VYScl.png|300px|right]] | [[File:CV-VYScl.png|300px|right]] | ||
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* amplitude: several magnitudes | * amplitude: several magnitudes | ||
Revision as of 13:00, 8 December 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.
- V504 Cen has period of 4.21h and went down by 6 mag in 2006 and remained in it for nearly a year.
