6 papers
Spectroscopic and Decade-long Photometric Observations of the Contact Binary V2790 Ori: Evidence for a Brown Dwarf Companion and a Solar-like Magnetic Activity Cycle
Si-Rui Wang, Kai Li, Qi-Qi Xia +6
We present 22 sets of light curves and one radial velocity curve for the W UMa-type total eclipse contact binary system V2790 Ori, derived by combining all available public photome…
The investigation of 84 TESS totally eclipsing contact binaries
Yani Guo, Kai Li, Liheng Wang +4
Based on the eclipsing binary catalog provided by \cite{2022ApJS..258...16P}, 84 totally eclipsing contact binaries with stable light curves were selected. The TESS light curves of…
Photometric and Spectroscopic Studies of Two Early-Type Eclipsing Binaries
Peng-Fei Ye, Kai Li, Fei Liu +2
Using high-precision photometric data from TESS, medium resolution spectroscopic data from LAMOST, and long-term eclipse timings, we provide orbital parameters for two early-type d…
Extremely Low Mass Ratio Contact Binaries. II. The First Photometric and Spectroscopic Investigations of Six Systems with Orbital Periods Longer than 0.5 days
Fei Liu, Kai Li, Xiang Gao +7
The photometric and spectroscopic studies of six contact binaries were performed for the first time. The orbital periods of all the six targets are longer than 0.5d, and we discove…
Search for and analysis of eclipsing binaries in the LAMOST Medium-Resolution Survey field. I. RA: , Dec: +343645
Jing-Yi Wang, Kai Li, Xiang Gao +7
Eclipsing binaries (EBs) play an important astrophysical role in studying stellar properties and evolution. By analyzing photometric data in the LAMOST Medium-Resolution Survey fie…
Photometric and Spectroscopic Investigations of Three Large Amplitude Contact Binaries
Xin Xu, Kai Li, Fei Liu +8
We performed photometric and spectroscopic studies of three large amplitude contact binaries, NSVS 2418361, ATLAS J057.1170+31.2384 and NSVS 7377875. The amplitudes of three system…