Origin of the Blue Continuum Radiation in the Flare Spectra of dMe stars

摘要

Calculations of the emission spectrum of a homogeneous plane layer of purehydrogen plasma taking into account nonlinear effects (the influence ofbremsstrahlung and recombination radiation of the layer itself on its Menzelfactors) [Morchenko et al., Ap&SS, Vol. 357, article id. 119 (2015)] show thatthe blue component of the optical continuum during the impulsive phase of largeflares on dMe stars originates from the near-photospheric layers [Grinin andSobolev, Afz, Vol. 13, 587 (1977)]. The gas behind the front of a stationaryradiative shock wave propagating in the red dwarf chromosphere toward thephotosphere is not capable of generating the blackbody radiation observed atthe maximum brightness of the flares.