title: The Apsidal Motion of the Eclipsing Binary Systems GSC 4487 0347 and GSC 4513 2537
abstract: Abstract The eclipsing variable stars GSC 44870347 and GSC 4513 2537 are recently discovered binary systems (Otero et al ., 2006) with orbital periods 1 d .99 and 6 d .33 days. We carried out the photometric observations of these eclipsing binaries from 2009-2010 using a CCD-array at the Tien-Shan Observatory in Kazakstan, at the Crimea Station of the Sternberg Astronomical Institute, at the Astrokolkhoz Observatory in New Mexico (AAVSO), while the spectrophotometric observations were obtained a
journal: Proceedings of the International Astronomical Union