Na. Tomov, A COLLIDING-WINDS INTERPRETATION FOR THE SPECTRAL VARIABILITY OF EG-AND, Monthly Notices of the Royal Astronomical Society, 272(1), 1995, pp. 189-197
A model of the EG And symbiotic system in which both components have a
stellar wind is proposed. It is supposed that a region of ionization
is formed at the interface of the colliding winds in this system and t
hat part of the giant's wind is ionized by the hot component also. The
profiles, intensities and radial velocities of the Halpha line, and s
ome ultraviolet emission lines taken from the literature, are treated
in the framework of this model.