Cool spotted binary system IN Vir (HD116544)статья
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Дата последнего поиска статьи во внешних источниках: 17 июля 2019 г.
Аннотация:High-precision spectral and photometrical observations of the binary IN Vir were carried out during 2015-2018. Basic geometrical and physical parameters were derived. The multicolour photometry made it possible to estimate the orbital inclination of the system as 55-68 deg, the size and the temperature of the cold spots - 24 percent of the surface and K5 spectrum. Light Curves form changes with time. The solar-like chromospheric activity of the K2 IV component with period approx 7 years is found. The star demonstrates long, till 20 years, intervals of a relatively stable configuration of the spots, and active periods with rapid changes on its surface.