Investigation of a Wide Eclipsing Binary System - The Symbiotic Star FG Ser = AS 296

摘要

We present an analysis of photoelectric UBVR_c observations of FG Ser. The orbital period of the binary was improved to 629.4 days. We discuss the color changes of the object and reconstruct the spectral energy distribution (SED) of FG Ser at the maximum of its optical brightness, and derive its physical parameters.