Institution: | Shao-Hua Zhang1,2 Hui-Yuan Wang1,Hong-Yan Zhou1,2,Ting-Gui Wang1 and Peng Jiang1 1 Key Laboratory for Researches in Galaxies and Cosmology,Department of Astronomy,University of Sciences and Technology of China,Chinese Academy of Sciences,Hefei 230026,China,2 Polar Research Institute of China,Jinqiao Rd. 451,Shanghai 200136 |