Publications (6)
Updated photometry and orbital period analysis for the polar \objectname{am herculis} on the upper edge of the period gap
Zhibin Dai, Shengbang Qian, Linjia Li
Twenty-one new optical light curves, including five curves obtained in 2009 and sixteen curves detected from the AAVSO International Database spanning from 1977 to 2011, demonstrat…
KM UMa: An active short-period detached eclipsing binary in a hierarchical quadruple system
Fangbin Meng, Liying Zhu, Nianping Liu +4
The first detailed photometric and spectroscopic analysis of the G-type eclipsing binary KM UMa is presented, which indicates that the system is a short-period detached eclipsing b…
Deep and low mass-ratio contact binaries and their third bodies
Liying Zhu, Shengbang Qian, Wenping Liao +6
Deep and low mass-ratio contact binaries (DLMCBs) are believed to be in the final stage of their contact phase, potentially leading to the formation of fast-rotating single stars s…
IY Lyr: A Thick-Disk first-overtone RR Lyrae Star with a Possible Neutron Star Companion
Linjia Li, Shengbang Qian, Ildar Asfandiyarov +10
IY Lyr, historically misclassified as an eclipsing binary, has been previously identified as a first-overtone RR Lyrae star (RRc star). Using multiband photometry (All-Sky Automate…
CW Cas: A solar-type contact binary system with an unseen third companion in a hierarchical quadruple system
Matekov Azizbek, Azizbek Matekov, Zhu Liying +25
We present a comprehensive multiband photometric and spectroscopic study of the G-type binary CW Cas whose parameters have not been well determined. Our double-lined spectroscopic…
The contact binary V344 Lacertae: is it a triple system?
Liang Liu, Shengbang Qian, Kai Li +4
The VRI passbands light curves of V344 Lac were presented and analyzed by using the latest version of the W-D code. The observed spectrum reveals that V344 Lac is not an A3 type bu…