[1] Russian Acad Sci, Cent Astron Observ Pulkovo, St Petersburg 196140, Russia
[2] St Petersburg State Univ, Sobolev Astron Inst, St Petersburg 199034, Russia
[3] Observ Nacl MCTI, Rio De Janeiro, Brazil
[4] Leibniz Inst Astrophys Potsdam AIP, Potsdam, Germany
[5] European So Observ, Garching, Germany
[6] Univ Fed Minas Gerais, Dept Fis, ICEx, Belo Horizonte, MG, Brazil
[7] Crimean Astrophys Observ, Nauchny, Russia
[8] ICATE, San Juan, Argentina