1. National Astronomical Observatories, Chinese Academy of Sciences , Beijing 100101 , China
2. University of Chinese Academy of Sciences , Beijing 100049 , China
3. School of Physics and Astronomy, Sun Yat-Sen University , Zhuhai 519082 , China
4. School of Physics, University of New South Wales , Sydney NSW 2052 , Australia
5. Nanjing Institute of Astronomical Optics and Technology , Nanjing 210042 , China
6. Chinese Center for Antarctic Astronomy , Nanjing 210008 , China
7. Department of Astronomy, Beijing Normal University , Beijing 100875 , China
8. Key Laboratory for Polar Science, MNR, Polar Research Institute of China , Shanghai 200136 , China
9. Aix Marseille University, CNRS/IN2P3, CPPM , Marseille, F-13007 , France
10. Physics Department and Tsinghua Center for Astrophysics (THCA), Tsinghua University , Beijing 100084 , China
11. Department of Physics and Astronomy, Texas A&M University , College Station, TX 77843 , USA
12. Purple Mountain Observatory, Chinese Academy of Sciences , Nanjing 210008 , China
13. College of Intelligence and Computing, Tianjin University , Tianjin 300350 , China
14. School of Astronomy and Space Science, Nanjing University , Nanjing 210023 , China