| Affiliation: |
| AA(Department of Physics and Astronomy, The University of Leicester, Leicester LE1 7RH ), AB(Department of Physics and Astronomy, The University of Leicester, Leicester LE1 7RH ), AC(Department of Physics and Astronomy, The University of Leicester, Leicester LE1 7RH ), AD(Physics Department, University of Durham, South Road, Durham DH1 3LE ), AE(Department of Physics, Carnegie Mellon University, Wean Hall, 5000 Forbes Avenue, Pittsburgh, PA 15213, USA ), AF(Anglo-Australian Observatory, PO Box 296, Epping NSW 2121, Australia ), AG(Institute of Astronomy, Madingley Road, Cambridge CB3 0HA ), AH(Johns Hopkins University, Department of Physics and Astronomy, Baltimore, MD 21218, USA ) |