1. GEPI, Observatoire de Paris, Université PSL, CNRS, Place Jules Janssen, F-92190 Meudon, France
2. European Southern Observatory, Alonso de Cordova 3107, Vitacura, Casilla 19001, Santiago, Chile
3. GEPI, Observatoire de Paris, Université PSL, CNRS, 77 Av. Denfert-Rochereau, F-75014 Paris, France
4. Institute of Physics, Laboratoire d’Astrophysique, Ecole Polytechnique Fédérale de Lausanne (EPFL), Observatoire de Sauverny, CH-1290 Versoix, Switzerland
5. CNRS, Observatoire Astronomique de Strasbourg, Université de Strasbourg, UMR 7550, F-67000, France
6. Max-Planck-Institut für Astronomie, Königstuhl 17, D-69117 Heidelberg, Germany
7. Leibniz Institute for Astrophysics Potsdam (AIP), An der Sternwarte 16, D-14482 Potsdam, Germany
8. Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA, UK
9. Instituto de Astrofí sica de Canarias, Vía Láctea, E-38205 La Laguna, Tenerife, Spain
10. Departamento de Astrofísica, Universidad de La Laguna, E-38206 La Laguna, Tenerife, Spain
11. Department of Physics and Astronomy, University of Victoria, Victoria, BC V8W 3P2, Canada
12. Institute of Astronomy, Russian Academy of Sciences, RU-119017 Moscow, Russia