1. School of Astronomy and Space Science, Nanjing University, Nanjing 210023, China
2. Key Laboratory of Modern Astronomy and Astrophysics, Nanjing University, Nanjing 210023, China
3. School of Physics & Astronomy, Cardiff University, The Parade, Cardiff CF24 3AA, UK
4. Department of Physics and Astronomy, McMaster University, Hamilton, Ontario L8S 4M1, Canada
5. Purple Mountain Observatory and Key Laboratory for Radio Astronomy, Chinese Academy of Sciences, Nanjing 210023, China
6. Sub-Department of Astrophysics, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford OX1 3RH, UK
7. Yonsei Frontier Lab and Department of Astronomy, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea
8. Department of Astronomy, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea
9. Department of Physics and Astronomy, Macquarie University, Balaclava Road, Sydney NSW 2109, Australia
10. Research Centre for Astronomy, Astrophysics and Astrophotonics, Macquarie University, Balaclava Road, Sydney NSW 2109, Australia
11. International Space Science Institute–Beijing, 1 Nanertiao, Zhongguancun, Hai Dian District, Beijing 100190, China
12. Astrophysics Research Institute, Liverpool John Moores University, IC2, Liverpool Science Park, 146 Brownlow Hill, Liverpool L3 5RF, UK
13. Yunnan Observatories, Chinese Academy of Sciences, 396 Yangfangwang, Guandu District, Kunming 650216, China
14. Chinese Academy of Sciences South America Center for Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China
15. Departamento de Astronomía, Universidad de Chile, Casilla 36-D, Santiago, Chile
16. Instituto de Física y Astronomía, Universidad de Valparaíso, Avda. Gran Bretaña 1111 Valparaíso, Chile
17. CAS Key Laboratory for Research in Galaxies and Cosmology, Department of Astronomy, University of Science and Technology of China, Hefei 230026, China
18. School of Astronomy and Space Science, University of Science and Technology of China, Hefei 230026, China
19. European Southern Observatory, Karl-Schwarzschild-Strasse 2, Garching D-85748, Germany
20. Academia Sinica, Institute of Astronomy and Astrophysics, 11F Astronomy-Mathematics Building, NTU/AS campus, No. 1, Section 4, Roosevelt Rd., Taipei 10617, Taiwan
21. Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, UK
22. National Optical Astronomy Observatory, 950 N. Cherry Avenue, Tucson, AZ 85719, USA
23. Astronomical Observatory Institute, Faculty of Physics, Adam Mickiewicz University, ul. Słoneczna 36, PL-60-286 Poznań, Poland
24. East Asian Observatory, 660 N. A‘ohōkū Place, University Park, Hilo, HI 96720, USA
25. Xinjiang Astronomical Observatory, Chinese Academy of Sciences, 830011 Urumqi, China
26. Max Planck Institute for Astronomy (MPIA), Königstuhl 17, D-69117 Heidelberg, Germany
27. Centre for Astrophysics Research, University of Hertfordshire, College Lane, Hatfield AL10 9AB, UK
28. Sterrenkundig Observatorium, Universiteit Gent, Krijgslaan 281, B-9000 Gent, Belgium
29. National Astronomical Observatory of China, 20A Datun Road, Chaoyang District, Beijing 100012, China