1. University of Chinese Academy of Sciences, Beijing 100049, China
2. National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, China
3. NAOC-UKZN Computational Astrophysics Center, University of KwaZulu-Natal, Durban 4000, South Africa
4. College of Science, China Three Gorges University, Yichang 443002, China
5. Center for Astronomy and Space Sciences, China Three Gorges University, Yichang 443002, China