Affiliation: | Anglo-Australian Observatory, PO Box 296, Epping, NSW 1710, Australia;Department of Physics, University of Durham, South Road, Durham DH1 3LE;Astrophysics Group, ICSTM, Blackett Laboratory, Prince Consort Road, London SW7 2BZ;Research School of Astronomy and Astrophysics, ANU, Private Bag, Weston Creek PO, ACT 2611, Australia;Department of Physics, Oxford University, 1 Keble Road, Oxford OX1 3RH |