Collisional excitation in nebulae and symbiotic variables

Abstract

It is proposed that the temperature simulation effect for the continuum of gaseous envelopes which are collisionally excited may explain the spectra of symbiotic objects such as Ag Pegasi. So it would not be necessary to postulate the binary structure for all the symbiotic objects. It has been found that in the case of AG Pegasi the binary hypothesis and the single object hypothesis are equivalent.