1. Dipartimento di Fisica e Astronomia Galileo Galilei, Università di Padova, Vicolo dell’Osservatorio 3, I-35122 Padova, Italy
2. Osservatorio Astronomico di Padova – INAF, Vicolo dell’Osservatorio 5, I-35122 Padova, Italy
3. Theoretical Astrophysics, Department of Physics and Astronomy, Uppsala University, Box 516, SE-751 20 Uppsala, Sweden
4. SISSA, via Bonomea 365, I-34136 Trieste, Italy
5. STScI, 3700 San Martin Drive, Baltimore, MD 21218, USA
6. Department of Astronomy, University of Washington, Box 351580, Seattle, WA 98195, USA
7. Koninklijke Sterrenwacht van België, Ringlaan 3, 1180 Brussel, Belgium
8. Department of Astrophysics, University of Vienna, Tuerkenschanzstrasse 17, A1180 Vienna, Austria
9. Eureka Scientific, Inc., 2452 Delmer Street, Oakland CA 94602, USA
10. Research School of Astronomy and Astrophysics, Australian National University, Canberra, ACT2611, Australia
11. Leibniz-Institüt für Astrophysik Potsdam, An der Sternwarte 16, D-14482 Potsdam, Germany