1. Centre for Extragalactic Astronomy, Department of Physics, Durham University, South Road, Durham DH1 3LE, UK
2. Institute for Computational Cosmology, Department of Physics, University of Durham, South Road, Durham DH1 3LE, UK
3. Department of Physics and Astronomy, University of Exeter, Stocker Road, Exeter EX4 4QL, UK
4. Astronomisches Rechen-Institut, Zentrum für Astronomie der Universität Heidelberg, Mönchhofstraße 12-14, D-69120 Heidelberg, Germany
5. Department of Astronomy, Oskar Klein Centre, Stockhom University, AlbaNova University Centre, SE-106 91 Stockholm, Sweden
6. Max-Planck-Institut für extraterrestrische Physik, Giessenbachstraße 1, D-85748 Garching, Germany
7. Department of Physics and Astronomy, University of Auckland, 38 Princes Street, 1142 Auckland, New Zealand
8. Astrophysics Research Institute, Liverpool John Moores University, Liverpool L3 5RF, UK
9. Department of Astronomy, University of California Berkeley, Berkeley, CA 94720, USA
10. AURA for the European Space Agency (ESA), Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA