A Study of an Outburst in the Classical Symbiotic Star Z And in a Colliding-Wind Model
D. V. Bisikalo, A. A. Boyarchuk, E. Yu. Kilpio, N. A. Tomov, M. T. Tomova
Abstract
Two-dimensional gas-dynamical modeling of the mass-flow structure is used to study the outburst development in the classical symbiotic star Z And. The stage-by-stage rise of the light during the outburst can be explained in the framework of the colliding winds model. We suggest a scenario for the development of the outburst and study the possible influence of the changes of the flow structure on the light of the system. The model variations of the luminosity due to the formation of a system of shocks are in good agreement with the observed light variations.
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