86 citations · 177 across the 15 of their papers we have counts for
15 papers
Extremely Low Mass Ratio Contact Binaries. III. Photometric and Spectroscopic Investigations of Eleven Systems
Youmo Lai, Kai Li, Raul Michel Murillo +6
We present photometric and spectroscopic investigations of 11 totally eclipsing contact binaries with mass ratios below 0.15, classifying them as extremely low mass ratio contact b…
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…
Photometric and Spectroscopic Studies of Four Low Mass-ratio Contact Binaries with Period Longer than 0.7 days
Yi-Fan Wang, Kai Li, Fei Liu +7
Photometric and spectroscopic studies of four long-period low mass-ratio contact binaries, V0508 And, V0844 Aur, V0699 Cep, and NSVS 6259046, are performed. V0508 And, V0844 Aur, a…
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…
Using machine learning method for variable star classification using the TESS Sectors 1-57 data
Li-Heng Wang, Kai Li, Xiang Gao +2
The Transiting Exoplanet Survey Satellite (TESS) is a wide-field all-sky survey mission designed to detect Earth-sized exoplanets. After over four years photometric surveys, data f…
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…
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…
Photometric and Spectroscopic analysis of eight totally eclipsing contact binaries with small mass ratios
Li-Heng Wang, Kai Li, Ya-Ni Guo +4
This paper selected eight totally eclipsing contact binaries for photometric and spectroscopic studies, spectral data were analyzed by ULySS, and photometric data were analyzed usi…
The study of eleven contact binaries with mass ratios less than 0.1
Xin-Yi Liu, Kai Li, Raul Michel +6
Multi-band photometric observations of eleven totally eclipsing contact binaries were carried out. Applying the Wilson-Devinney program, photometric solutions were obtained. There…
Photometric and spectroscopic studies of the long period low mass ratio deep contact binary KN Per
Xin-Yi Gao, Kai Li, Ya-Wen Cai +6
The photometric analysis and spectroscopic study of the long period low mass ratio deep contact binary KN Per were executed. The light curves of BV(RI)-band were from the Ningb…
The First Photometric and Orbital Period Investigation of an Extremely Low Mass Ratio Contact Binary with a Sudden Period Change, TYC 4002-2628-1
Di-Fu. Guo, Kai Li, 1 Fen Liu +6
Photometric observations for the totally eclipsing binary system TYC 4002-2628-1, were obtained between November 2020 and November 2021. To determine the stellar atmospheric parame…
Extremely low mass ratio contact binaries -- I. the first photometric and spectroscopic investigations of ten systems
Kai Li, Xiang Gao, Xin-Yi Liu +4
The photometric and spectroscopic investigations of ten contact binaries were presented for the first time. It is discovered that the mass ratios of all the ten targets are smaller…
TOI-4562 b: A highly eccentric temperate Jupiter analog orbiting a young field star
Alexis Heitzmann, George Zhou, Samuel N. Quinn +47
We report the discovery of TOI-4562 b (TIC-349576261), a Jovian planet orbiting a young F7V-type star, younger than the Praesepe/Hyades clusters (< Myr). This planet stands o…
The Unusual Eruption of the Extragalactic Classical Nova M31N 2017-09a
Christopher Lloyd, Lewis M. Cook, Seiichiro Kiyota +10
M31N 2017-09a is a classical nova and was observed for some 160 days following its initial eruption, during which time it underwent a number of bright secondary outbursts. The ligh…