National Astronomical Observatories Chinese Academy of Sciences Beijing 100012 China;
Université de Lyon Université Lyon 1 Villeurbanne F-69622 France;
CRAL Observatoire de Lyon CNRS UMR 5574 69561 Saint-Genis Laval France;
Key Laboratory of Optical Astronomy NAOC Chinese Academy of Sciences;
Graduate University of Chinese Academy of Sciences Beijing 100049 China;
Shandong University at Weihai Weihai 264209 China;