Affiliation: | Department of Physics, University of Durham, South Road, Durham DH1 3LE;Isaac Newton Group, Apartado 321, 38780 Santa Cruz de La Palma, Tenerife, Canary Islands, Spain;Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD21210, USA;Space Telescope –European Coordinating Facility, European Southern Observatory, Karl-Schwarzschild-Str. 2, D-85748 Garching bei München, Germany |