Outburst of SS AUR - December 2007

Outburst of SS AUR - December 2007

Dwarf Novae are close binary systems with an accretion disc around the
white dwarf component. Outbursts from 2 to 9 magnitudes, lasting for a
day or two, occur at quasi-periodic intervals of days to years. Many
of these stars are ultraviolet and X-ray variable. Most UG's are
reclassified into the subspecies UGSS, UGSU and UGZ after further
study.

SS AUR is in the UGSS subspecies. This type increase in brightness by
2-6 mag in V in 1-2 days and in several subsequent days return to
their original brightnesses. The values of the cycle are in the range
10 days to several thousand days.

http://www.martin-nicholson.info/ssaur/ssaur.htm

Martin Nicholson, Daventry, England.
http://www.martin-nicholson.info/1/1a.htm

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