1. Department of Physics and Astronomy, University of Southampton, Southampton, SO17 1BJ
2. Astrophysics Research Centre, School of Mathematics and Physics, Queens University Belfast, Belfast BT7 1NN
3. Max-Planck-Institut für Astrophysik, Karl-Schwarzschild-Str. 1, DE-85748 Garching-bei-München, Germany
4. Dark Cosmology Centre, Niels Bohr Institute, University of Copenhagen, Juliane Maries vej 30, 2100 Copenhagen, Denmark
5. Max-Planck-Institut für Extraterrestrische Physik, Giessenbachstraße 1, 85748, Garching, Germany
6. Instituto de Astrofísica, Facultad de Física, Pontificia Universidad Católica de Chile, Vicuña Mackenna 4860, 7820436 Macul, Santiago, Chile
7. Millennium Institute of Astrophysics, Vicuña Mackenna 4860, 7820436 Macul, Santiago, Chile
8. Max-Planck Institut für Astrophysik, Karl-Schwarzschild-Str. 1, D-85748 Garching, Munich, Germany
9. Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, Massachusetts 02138, USA
10. European Southern Observatory, Alonso de Córdova 3107, Casilla 19, Santiago, Chile
11. Las Cumbres Observatory Global Telescope Network, 6740 Cortona Dr., Suite 102 Goleta, CA 93117, USA
12. Department of Physics, University of California, Santa Barbara, CA 93106-9530, USA
13. INAF, Osservatorio Astronomico di Padova, vicolo dell'Osservatorio 5, 35122, Padova, Italy
14. INAF Osservatorio Astronomico di Capodimonte, Salita Moiariello 16, I-80131 Napoli, Italy
15. Institute for Astronomy, University of Hawaii at Manoa,Honolulu, HI 96822, USA
16. School of Physics, O'Brien Centre for Science North, University College Dublin, Belfield, Dublin 4, Ireland
17. Department of Particle Physics and Astrophysics, Weizmann Institute of Science, Rehovot 7610001, Israel
18. Research School of Astronomy and Astrophysics, Australian National University, Canberra, ACT 2611, Australia
19. ARC Centre of Excellence for All-Sky Astrophysics (CAASTRO), The Australian National University, Canberra, ACT 2611, Australia
20. Australian National University, Canberra, ACT 2611, Australia
21. Department of Physics, University of California, Davis, CA 95616, USA