1. Indian Institute of Technology Guwahati , Guwahati, 781039 Assam, India
2. Space Astronomy Group , ISITE Campus, U. R. Rao Satellite Center, Outer Ring Road, Marathahalli, Bangalore 560037, India
3. Indian Institute of Astrophysics , Koramangala, Bangalore 560034, India
4. Aryabhatta Research Institute of Observational Sciences , Manora Peak, Nainital 263002, India
5. Discipline of Astronomy, Astrophysics and Space Engineering, Indian Institute of Technology Indore , Indore 453552, India
6. Department of Astronomy, Xiamen University , Xiamen, Fujian 361005, People’s Republic of China