1. Institute of Astronomy, University of Cambridge , Madingley Road, Cambridge CB3 0HA , UK
2. Sterrenkundig Observatorium, Universiteit Gent , Krijgslaan 281 S9, 9000 Gent , Belgium
3. Kavli Institute for the Physics and Mathematics of the Universe (WPI), The University of Tokyo Institutes for Advanced Study , 5 Chome-1-5 Kashiwanoha, Kashiwa, Chiba 277-8583 , Japan
4. Astrophysics Research Group, Faculty of Engineering and Physics, University of Surrey , Guildford GU2 7XH , UK
5. Department of Physics, School of Science, The University of Tokyo , Bunkyo, Tokyo 113-0033 , Japan
6. Institute for Physics of Intelligence, School of Science, The University of Tokyo , Bunkyo, Tokyo 113-0033 , Japan
7. Universität Heidelberg, Zentrum für Astronomie, Institut für theoretische Astrophysik , Albert-Ueberle-Str. 2, D-69120 Heidelberg , Germany
8. Universität Heidelberg, Interdisziplinäres Zentrum für Wissenschaftliches Rechnen , Im Neuenheimer Feld 205, D-69120 Heidelberg , Germany