1. Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA, UK
2. Kapteyn Astronomical Institute, University of Groningen, PO Box 800, NL-9700AV Groningen, the Netherlands
3. Department of Physics and Astronomy, Lehman College, City University of New York, 250 Bedford Park Boulevard West, Bronx, NY 10468-1589, USA
4. Department of Astrophysics, American Museum of Natural History, Central Park West and 79th Street, NY 10024-5192, USA
5. The Graduate Center of the City University of New York, 365 Fifth Avenue, New York, NY 10016, USA
6. School of Physics, The University of Melbourne, Parkville, VIC 3010, Australia
7. School of Physics, Monash University, Clayton, VIC 3800, Australia
8. Monash Centre for Astrophysics, Monash University, Clayton, VIC 3800, Australia
9. Think Big Analytics, 3 London Bridge Street, London SE1 9SG, UK
10. Gemini Observatory, Hilo, HI 96720, USA