Affiliation: |
| AA(Special Astrophysical Observatory, Nizhnij Arkhyz, Karachaevo-Cherkessia 369167, Russia; Kazan (Volga region) Federal University, Kazan 420008, Russia), AB(Special Astrophysical Observatory, Nizhnij Arkhyz, Karachaevo-Cherkessia 369167, Russia; Kazan (Volga region) Federal University, Kazan 420008, Russia 0000-0003-0035-651X), AC(Special Astrophysical Observatory, Nizhnij Arkhyz, Karachaevo-Cherkessia 369167, Russia), AD(Pulkovo Observatory of Russian Academy of Sciences, Saint-Petersburg 196140, Russia), AE(Pulkovo Observatory of Russian Academy of Sciences, Saint-Petersburg 196140, Russia) |