National Astronomical Observatories / Yunnan Observatory;
Chinese Academy of Sciences;
Kunming 650011;
China;
Key Laboratory for the Structure and Evolution of Celestial Objects;
Chinese Academy ofSciences;
Kunming 650011;
China;
Key Laboratory for Research in Galaxies and Cosmology;
Shanghai Astronomical Observatories;
Chinese Academy of Sciences;
Shanghai 200030;
China;
Graduate University of Chinese Acaciemy of Sciences;
Beijing 100049;
China;