Orbital period cut-off of W UMa-type contact binaries

XD Zhang, SB Qian - Monthly Notices of the Royal Astronomical …, 2020 - academic.oup.com
Period cut-off and period–colour relation are two special characters of W UMa-type contact
binaries. In the past, many authors noted these two properties, however, a comprehensive …

Magnetic Activity and Orbital Period Study for the Short-period RS CVn–type Eclipsing Binary DV Psc

Q Pi, L Zhang, S Bi, XL Han, H Lu, Q Yue… - The Astrophysical …, 2019 - iopscience.iop.org
Using 27 sets of new multiband photometry light curves acquired from our long-term
photometric campaign carried out in the last 5 yr and high-resolution spectroscopic data …

Estimating the absolute parameters of W UMa-type binary stars using Gaia DR3 parallax

A Poro, M Hedayatjoo, M Nastaran, M Nourmohammad… - New Astronomy, 2024 - Elsevier
The accuracy of absolute parameters' estimation in contact binary systems is important for
investigating their evolution and solving some challenges. The Gaia DR3 parallax is one of …

A comprehensive investigation of the variable overcontact system EH Cancri

KB Alton, RH Nelson, K Stȩpień - Journal of Astrophysics and Astronomy, 2020 - Springer
Precise multi-color CCD-derived photometric data were obtained from EH Cnc at two sites
during 2010, 2014 and 2018 wherein each epoch used a different instrument. This has …

Mass-transfer properties of overcontact systems in the Kepler eclipsing binary catalog

S Kouzuma - Publications of the Astronomical Society of Japan, 2018 - academic.oup.com
We selected mass-transferring binary candidates from the catalog of Kepler eclipsing binary
stars and investigated the dependence of the mass-transfer rate on several astrophysical …

Spectroscopic and photometric studies of four W UMa-type eclipsing binaries

L Long, LY Zhang, XL Han, HP Lu… - Monthly Notices of the …, 2019 - academic.oup.com
We performed new photometric and spectroscopic studies on four W UMa-type eclipsing
binaries (V400 Lyr, V574 Lyr, V1033 Her and V1062 Her). The main aims were to determine …

Magnetic activity and period variation studies of the short-period eclipsing binaries. II. v1101 her, AD phe, and NSV 455 (j011636. 15–394955.7)

Q Pi, L Zhang, S Bi, XL Han, D Wang… - The Astronomical …, 2017 - iopscience.iop.org
In this paper, we present new BVRI light curves of short-period contact eclipsing binaries
V1101 Her and AD Phe from our observations carried out from 2014 to 2015 using the …

Photometric studies of three neglected short-period contact binaries GN bootis, BL leonis, and v1918 cygni

YG Yang, SB Qian, HF Dai - The Astronomical Journal, 2013 - iopscience.iop.org
We present new photometry for three short-period contact binaries, GN Boo, BL Leo, and
V1918 Cyg, observed from 2008 December to 2012 April using several small telescopes in …

Orbital parameters and period variation studies of the short-period eclipsing binaries FG Sct, VZ Lib and VZ Psc

Q Yue, LY Zhang, XML Han, HP Lu… - … in Astronomy and …, 2019 - iopscience.iop.org
We present eight sets of new light curves for binaries FG Sct, VZ Lib and VZ Psc, which are
all contact eclipsing binaries with short orbital periods. We carried out our observations from …

Magnetic activity and orbital period variation of the eclipsing binary KV Gem

L Zhang, Q Pi, Y Yang, Z Li - New Astronomy, 2014 - Elsevier
This paper presents new CCD BVRI light curves of a neglected eclipsing binary KV Gem.
Our new light curves were obtained in 2010 and 2011 at the Xinglong station of the National …