1. Department of Physics and Astronomy, University of Southampton, Hampshire, Southampton SO17 1BJ, UK
2. European Southern Observatory, Casilla 19001, Santiago 19, Chile
3. Czech Academy of Sciences, Národní 3, 117 20 Staré Mesto, Czechia
4. Department of Physics and Astronomy, University of Leicester, University Road, Leicester LE1 7RJ, UK
5. Centre for Extragalactic Astronomy, Department of Physics, Durham University, South Road, Durham DH1 3LE, UK
6. Núcleo de Astronomía de la Facultad de Ingeniería y Ciencias, Universidad Diego Portales, Av. Ejército Libertador 441, Santiago, Chile
7. Dipartimento di Fisica, Universitá degli Studi di Torino, via Pietro Giuria 1, I-10125 Torino, Italy
8. INAF - Istituto di Astrofisica e Planetologia Spaziali, via Fosso del Cavaliere 100, I-00133 Roma, Italy
9. Max Planck Institute for Extraterrestrial Physics (MPE), Giessenbachstr. 1, D-85748 Garching, Germany
10. Kavli Institute for Astronomy and Astrophysics, Peking University, Beijing 100871, China
11. Department of Physics and Astronomy, George Mason University, MS 3F3, 4400 University Drive, Fairfax, VA 22030, USA
12. Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91109, USA