4 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…
Optical Flares Detected on a Contact Binary: The First Photometric and Spectroscopic Analysis of a Long-period Low Mass Ratio Contact Binary HAT 307-0007476
Ling-Zhi Li, Kai Li, Xiang Gao +10
This paper presents the photometric and spectroscopic analysis of a long-period totally eclipsing contact binary (HAT 307-0007476) for the first time. This system is a low mass rat…
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…
Detection of the lowest mass ratio contact binary in the universe: TYC 3801-1529-1
Kai Li, Xiang Gao, Di-Fu Guo +7
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…