1. Department of Physics & Astronomy, Johns Hopkins University , Baltimore, MD 21218, USA
2. Space Telescope Science Institute , 3700 San Martin Drive, Baltimore, MD 21218, USA
3. Dipartimento di Fisica e Astronomia, Università degli Studi di Firenze , via G. Sansone 1, I-50019 Sesto Fiorentino, Firenze, Italy
4. Université de Strasbourg , CNRS UMR 7550, Observatoire astronomique de Strasbourg, 11 rue de l’Université, F-67000 Strasbourg, France
5. Department of Astronomy, University of Cape Town , Rondebosch 7701, Cape Town, South Africa
6. Caltech/IPAC , 1200 E. California Blvd., Pasadena, CA 91125, USA
7. Centre for Astrophysics and Supercomputing, Swinburne University of Technology , Hawthorn, VIC 3122, Australia
8. Cornell Center for Astrophysics and Planetary Science, Cornell University , 122 Sciences Drive, Ithaca, NY 14853, USA
9. Departamento de Física Teórica y del Cosmos , Universidad de Granada, E-18071, Granada, Spain
10. Instituto Carlos I de Física Téorica y Computacional , Facultad de Ciencias, D-18071 Granada, Spain