Institution: | 1.Sternberg Astronomical Institute, Moscow State University, Universitetskii pr. 13, Moscow, 119234, Russia ;2.Institute of Astronomy, Russian Academy of Sciences, ul. Pyatnitskaya 48, Moscow, 119017, Russia ;3.Center for Data Intensive and Time Domain Astronomy, Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824, USA ; |