Photoelectric photometry of the nova-like eclipsing variable PG1030+590

Abstract

PG1030+590 is a recently discovered nova-like eclipsing variable. Here we present our results of high-speed photoelectric photometry and its UBVR light curves. Using the model of cataclysmic variables, we found its geometrical and physical parameters to be as follows: mass of the white dwarf component, M 1 = 0.83±0.22 M⊙, radius of the late-type component, M 2 = 0.35±0.06 M⊙, and orbital inclination, i = 81°±2°. Also, using two different methods, we found the radius of the accretion disk around the white dwarf to be R d ≈0.32 R⊙. This result was compared with the various theoretical models of accretion disks in close binaries.