Institution: | Centre for Astrophysics &Supercomputing, Swinburne University, Hawthorn, VIC 3122, Australia;European Southern Observatory, Garching, Germany;Departmento de Astronomia y Astrofisica, P. Universidad Catolica, Casilla 104, Santiago 22, Chile;School of Physics and Astronomy, University of Birmingham, Birmingham B15 2TT |