Yunnan Observatories;
Chinese Academy of Sciences;
Kunming 650216;
China;
Key Laboratory of the Structure and Evolution of Celestial Objects;
Chinese Academy of Sciences;
Kunming 650216;
China;
University of Chinese Academy of Sciences;
Beijing 100049;
China;
School of Physics and Electronic Science;
Guizhou Normal University;
Guiyang 550001;
China;