1. Max-Planck-Institut für Astronomie , Königstuhl 17, D-69117 Heidelberg, Germany
2. Kavli Institute for Cosmology and Institute of Astronomy , Madingley Road , Cambridge, CB3 0HA, UK
3. School of Physics and Astronomy, University of Nottingham , University Park, Nottingham, NG7 2RD , UK
4. Tata Institute of Fundamental Research , Homi Bhabha Road , Mumbai 400005, India
5. INAF – Osservatorio Astronomico di Trieste , Via Tiepolo 11, I-34143 Trieste, Italy
6. Scuola Normale Superiore , Piazza dei Cavalieri 7, I-56126 Pisa, Italy
7. IFPU – Institute for Fundamental Physics of the Universe , via Beirut 2, I-34151 Trieste, Italy
8. Department of Physics and Astronomy, University of California , Riverside, CA 92521 , USA
9. Centre for Astrophysics and Supercomputing, Swinburne University of Technology , Hawthorn, Victoria 3122 , Australia
10. ARC Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D) , Australia
11. Institute for Astronomy, University of Edinburgh , Blackford Hill, Edinburgh EH9 3HJ , UK
12. Leibniz-Institut für Astrophysik Potsdam (AIP) , An der Sternwarte 16, D-14482 Potsdam, Germany
13. Steward Observatory, University of Arizona , 933 N Cherry Avenue , Tucson, AZ 85721, USA
14. Research School of Astronomy and Astrophysics, Australian National University , Canberra ACT 2611 , Australia
15. MIT Kavli Institute for Astrophysics and Space Research , 77 Massachusetts Ave , Cambridge, MA 02139, USA