Tags: Star.
AB Doradus is a pre-main-sequence trinary star system in the constellation Dorado. The primary is a flare star that shows periodic increases in activity.The primary star in this system spins at a rate 50 times that of the Sun and consequently has a strong magnetic field. It has a greater number of star spots than the Sun. These can cause the luminosity of the star to appear to vary over each orbital cycle.