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19 August 2013

Nova Not the Only Interesting Star in Delphinus

There has been a lot of talk  in the astronomy community over the last week about Nova Delphini 2013.  Novae are actually double star systems in which one component is a massive star that strips material from a large, low density companion.  Once enough gas has fallen onto the massive star it "ignites" and its brightness flares up; sometimes hundreds of times its usual brightness.

Yet Nova Delphini 2013 is not the only interesting star in Delphinus.  The star known as Sualocin (α Delphini) is also a multiple star system consisting of 7 components.  The brightest (which we see with the naked eye) is a spectral type A star, meaning it is white in color and therefore very hot.

Binoculars or a telescope will be needed to resolve the close companion.  

Delphinus and the star Saulocin.  Created by the author using Stellarium. 

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