[1
] Leibniz Institute for Astrophyics Potsdam (AIP), An der Sternwarte 16, D-14482 Potsdam,
Germany
[2
] Observatoire astronomique de Strasbourg, Université de Strasbourg, CNRS, UMR 7550,
F-67000 Strasbourg, France
[3
] Max-Planck-Institut für Astronomie, Königstuhl 17, D-69117 Heidelberg, Germany
[4
] Instituto de Astrofísica de Canarias, Vía Láctea, E-38205 La Laguna, Tenerife, Spain
[5
] Departamento de Astrofísica, Universidad de La Laguna, E-38206 La Laguna, Tenerife,
Spain
[6
] Université Côte d'Azur, Observatoire de la Côte d'Azur, CNRS, Lagrange, Bd de l'Observatoire,
CS34229, F-06304 Nice, France
[7
] GEPI, Observatoire de Paris, PSL Research University, CNRS, Place Jules Janssen,
F-92190 Meudon, France
[8
] Department of Astronomy and Astrophysics, University of Toronto, Toronto, ON M5S
3H4, Canada
[9
] NRC Herzberg Astronomy and Astrophysics, 5071 West Saanich Road, Victoria, BC V9E
2E7, Canada
[10
] Université de Picardie Jules Verne, 33 rue St-Leu, F-80080 Amiens, France
[11
] Institut für Physik und Astronomie, Universität Potsdam, Karl-Liebknecht-Str 24/25,
D-14476 Golm, Germany
[12
] Laboratoire d'astrophysique, École Polytechnique Fédérale de Lausanne (EPFL), Observatoire,
CH-1290 Versoix, Switzerland
[13
] Department of Physics and Astronomy, University of Victoria, PO Box 3055, STN CSC,
Victoria, BC V8W 3P6, Canada
[14
] UK Astronomy Technology Centre, Royal Observatory Edinburgh, Blackford Hill, Edinburgh,
EH9 3HJ, UK
[15
] Kapteyn Astronomical Institute, University of Groningen, Landleven 12, NL-9747 AD
Groningen, the Netherlands