1. Indian Institute of Astrophysics , Koramangala, Bengaluru 560 034 , INDIA
2. Department of Physics, Indian Institute of Science Education and Research (IISER) Tirupati , Tirupati 517507 , INDIA
3. Ruhr Universität Bochum, Astronomisches Institut, Universitätsstrasse 150 , D-44801 Bochum , Germany
4. Department of Physics and Astronomy , N283 ESC, Brigham Young University, Provo, UT 84602 , USA
5. Pulkovo Observatory, Russian Academy of Sciences , St. Petersburg 196140 Russia
6. Special Astrophysical Observatory, Russian Academy of Sciences , Nizhnii Arkhyz 369167 Russia
7. Department of Astronomy, University of Geneva , Chemin Pegasi 51, 1290 Versoix , Switzerland