UT: Unprecedented Eruption Catches Astronomers By Surprise

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bystander
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UT: Unprecedented Eruption Catches Astronomers By Surprise

Post by bystander » Sun Mar 21, 2010 8:13 pm

Unprecedented Eruption Catches Astronomers By Surprise
Universe Today - 2010 March 21
An alert was raised March 11 when Japanese amateur astronomers announced what might have been the discovery of a new 8th magnitude nova in the constellation of Cygnus. It was soon realized that this eruption was not what it appeared to be. It was actually the unexpected nova-like eruption of a known variable star, V407 Cygni. Typically varying between 12th and 14th magnitude, V407 Cyg is a rather mundane variable star. So what caused this well-behaved star to suddenly go ballistic?