Ioffe Institute Address:ul. Polytekhnicheskaya 26, St. Petersburg, 194021, Russian Federation Phone:+7 (812) 297-22-45 Fax:+7 (812) 247-10-17 Website:
Centre de Recherche Astrophysique de Lyon (CNRS, UMR 5574); Ecole Normale Supérieure de Lyon; Université de Lyon, Université Lyon 1; Observatoire de Lyon Address:9 avenue Charles André, Saint-Genis-Laval, 69230, France
The Central Astronomical Observatory of the Russian Academy of Sciences at Pulkovo Address:Pulkovskoe shosse 65/1, St. Petersburg, 196140, Russian Federation Website:
