| Affiliation: | South African Astronomical Observatory, PO Box 9, Observatory 7935, South Africa; Department of Astronomy, University of Texas, Austin, TX 78712, USA; Department of Physics, Applied Physics and Astronomy, Rensselaer Polytechnic Institute, Troy, NY 12180-3590, USA; Chatterton Astronomy Department, School of Physics, University of Sydney, NSW 2006, Australia; School of Chemical and Physical Sciences, Victoria University, Box 600, Wellington, New Zealand; Department of Physics and Astronomy, University of Leicester, Leicester LE1 7RH; Department of Physics and Astronomy, Iowa State University, Ames, IA 50011, USA |
