Institution: | a Kapteyn Astronomical Institute, Postbus 800, 9700 AV Groningen, The Netherlands b Department of Physics & Astronomy, University of Canterbury, Private Bag 4800, Christchurch, New Zealand c Institut d'Astrophysique de Paris, 98bis Boulevard Arago, 75014 Paris, France d South African Astronomical Observatory, P.O. Box 9, Observatory 7935, South Africa e Ohio State University, Department of Astronomy, Columbus, OH 43210, USA f Physics Department, University of Tasmania, G.P.O. 252C, Hobart, Tasmania 7001, Australia g School of Physics & Astronomy, University of St Andrews, North Haugh, St Andrews, Fife KY16 9SS, Scotland, UK h Perth Observatory, Walnut Road, Bickley, Perth 6076, Australia i Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA |