1. Institute of Astrophysics and Space Sciences (IA), Rua das Estrelas, P-4150-762 Porto, Portugal
2. Shanghai Astronomical Observatory, 80 Nandan Road, Shanghai 200030, China
3. Department of Astronomy, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, Republic of Korea
4. Korea Astronomy and Space Science Institute, 776, Daedeokdae ro, Yuseong gu, Daejeon, 305-348, Republic of Korea
5. Indian Institute of Astrophysics, Koramanagala, Bangalore 34, India
6. Aryabhatta Research Institute of Observational Sciences (ARIES), Manora Peak, Nainital-263002, Uttarakhand, India
7. Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, Republic of Korea