| Institution: | School of Physics and Astronomy, University of Southampton, SO17 1BJ;Instituto de Astrofisica de Canarias, 38200 La Laguna, Tenerife, Spain;South African Astronomical Observatory, PO Box 9, Observatory 7935, Cape, South Africa;Department of Physics and Astronomy, University College London, Gower Street, London, WC1E 6BT;Department of Physics and Astronomy, The Open University, Walton Hall, Milton Keynes, MK7 6AA;Harvard-Smithsonian Center for Astrophysics, MS-67, 60 Garden Street, Cambridge, MA 02138, USA |
