Contact binaries consist of two strongly interacting component stars where they are filling
their critical Roche lobes and sharing a common envelope. Most of them are main-sequence …

We present the identification and photometric analysis of 30 new low mass ratio (LMR)
totally eclipsing contact binaries found in Catalina Sky Survey data. The LMR candidates are …

The cutoff mass ratio is under debate for contact binaries. In this paper, we present the
investigation of two contact binaries with mass ratios close to the low mass ratio limit. It is …

ABSTRACT ZZ Piscis Austrinus (ZZ PsA) is a neglected bright southern contact binary
system with maximum V magnitude of 9.26. We present the first multiband photometric …

New relationships between the orbital period and some parameters of W Ursae Majoris (W
UMa)-type systems are presented in this study. To investigate the relationships, we …

Photometric observations for the totally eclipsing binary system TYC 4002-2628-1, were
obtained between November 2020 and November 2021. To determine the stellar …

Binary and multiple stellar systems are numerous in our solar neighbourhood with 80 per
cent of the solar-type stars being members of systems with high order multiplicity. The …

The photometric and spectroscopic studies of three contact binaries, ASASSN-V J052036.
28+ 144711.0, ASASSN-V J064846. 22+ 241709.9, and ASASSN-V J073441. 02+ 555833.0 …

This paper presents the first analysis of the contact binary TYC 3801-1529-1. We observed
four sets of multiple bands complete light curves and one set of radial velocity curve of the …

We presented new photometry for four short-period late-type binaries, observed by three
small telescopes in China from 2020 September to 2021 December. Seven sets of light …