[1] Xiamen Univ, Dept Astron, Xiamen 361005, Fujian, Peoples R China
[2] Tsinghua Univ, Dept Astron, Beijing 100084, Peoples R China
[3] Tsinghua Univ, Dept Engn Phys, Beijing 100084, Peoples R China
[4] Nanjing Univ, Sch Astron & Space Sci, 163 Xianlin Ave, Nanjing 210023, Peoples R China
[5] Nanjing Univ, Key Lab Modern Astron & Astrophys, Minist Educ, Nanjing 210023, Peoples R China
[6] Nanjing Normal Univ, Dept Phys, Nanjing 210023, Peoples R China
[7] Nanjing Normal Univ, Inst Theoret Phys, Nanjing 210023, Peoples R China
[8] Chinese Acad Sci, Key Lab Opt Astron, Natl Astron Observ, Beijing 100101, Peoples R China
[9] Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China
[10] Wuhan Univ, WHU NAOC Joint Ctr Astron, Wuhan 430072, Hubei, Peoples R China