Affiliation: | Institute of Astronomy, Madingley Road, Cambridge CB3 0HA;European Southern Observatory, Karl-Schwarzschild-Str 2.,Garching 85748, Germany;School of Physics, University of Exeter, Stocker Road, Exeter;Anglo-Australian Observatory, Epping, NSW, 1710, Australia;Astrophysics, NAPL, Keble Road, Oxford OX1 3RH;Rutherford Appleton Laboratory, Chilton, Didcot OX110QX |