Difference between revisions of "Triggers:CVs"
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== VY Sculptoris == | == 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 ([http://uk.arxiv.org/abs/0910.0475 Greiner et al. 2009]). | 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 ([http://uk.arxiv.org/abs/0910.0475 Greiner et al. 2009]). | ||
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[[File:CV-VYScl.png|300px|right]] | [[File:CV-VYScl.png|300px|right]] | ||
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* mechanism not well understood | * mechanism not well understood | ||
* 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. | ||
| + | * V504 Cen has period of 4.21h | ||
Revision as of 10:05, 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.
- V504 Cen has period of 4.21h
