1. Crimean Astrophysical Observatory of Russian Academy of Sciences, p/o Nauchny, 298409, Republic of Crimea
2. Instituto de Astrofísica e Ciências do Espaço, Universidade do Porto, CAUP, Rua das Estrelas, PT4150-762 Porto, Portugal
3. Departamento de Física e Astronomia, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre 687, PT4169-007 Porto, Portugal
4. Laboratoire Univers et Théories, Observatoire de Paris, UMR 8102 du CNRS, Université Paris Diderot, F-92190 Meudon, France
5. Nordic Optical Telescope, Rambla José Ana Fernández Pérez, 7, 38711 Breña Baja, Spain
6. Department of Astronomy, AlbaNova University Center, Stockholm University, Sweden
7. Sternberg Astronomical Institute, M. V. Lomonosov Moscow State University, Moscow, Russia
8. Institute of Astrophysics of Andalusia-CSIC, Glorieta de la Astronomía, 3, 18008 Granada, Spain
9. National Astronomical Research Institue of Thailand, 260 Moo 4, T. Donkaew, A. Maerim, Chiangmai, 50180 Thailand
10. Ural Federal University, 51, Lenin av., Ekaterinburg 620000, Russia