Spot Activity of the Dwarf Star V772 Her

Abstract

We consider photometric behavior of the spotted primary in V772 Her, an eclipsing system of dwarf stars (G0V + M5V), on the base of many-year multicolor photoelectric observations. The combined photometric effect due to spots can be as large as \({0}_{.}^{{\text{m}}}\)19. Our modeling demonstrated that the area of spotted regions can reach 13% of the star’s total surface area. Spots are cooler than the undisturbed photosphere by 1800 K and are located at low latitudes.