Dwarf nova

Dwarf nova HT Cas seen in outburst (mag ~13.4) on November 2, 2010

A dwarf nova (pl. novae), or U Geminorum variable, is one of several types of cataclysmic variable star, consisting of a close binary star system in which one of the components is a white dwarf that accretes matter from its companion. Dwarf novae are dimmer and repeat more frequently than "classical" novae.[1]

  1. ^ Samus, N.N.; Durlevich, O.V. (12 February 2009). "GCVS Variability Types and Distribution Statistics of Designated Variable Stars According to their Types of Variability". Retrieved 8 February 2013.

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