The first photometric, spectroscopic and period variation studies of neglected short-period
eclipsing binary V2840 Cygni are presented. High mass ratio contact binaries (HMRCBs) …

We performed photometric and spectroscopic studies of three large amplitude contact
binaries: NSVS 2418361, ATLAS J057. 1170+ 31.2384, and NSVS 7377875. The …

Formation and evolution of marginal contact binaries with larger temperature difference
between their two components remain inexplicable to date. To get a better understanding of …

We present the results of our investigation and first analysis of the geometrical and physical
parameters of the 1SWASP J15133589-3725239 and 1SWASP J22310605-1940584 W …

This work is targeted on the photometric (light curve) analysis of the stars with G2 spectral
type. The sun like star (ASAS ID 211049-3657.9) located in the ASAS catalogue was …