UV emission of superflare stars
We carried out analysis of GALEX NUV data for about of one hundred and fifty superflare stars (energies in the range 10 33 - 10 36 erg) observed with Kepler telescope. Evidence of an increased UV flux of stars with superflares compared to stars with similar atmospheric parameters is obtained. There are indications that in addition to the increased spottedness (activity at the level of the photosphere) superflare stars also have an excess flux of radiation in the UV region which suggests their increased chromospheric activity.