Outburst of YZ CNC - December 2007

Outburst of YZ CNC - 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.

YZ CNC is a UGSU subspecies with both "normal" outbursts and
occasional superoutbursts - up to 2 mags brighter and about 5-8 times
longer.

ftp://www.martin-nicholson.info/yzcnc/yzcnc.htm

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

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