Institution: | Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT;Harvard–Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA;Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA;Goucher College, 1021 Dulaney Valley Road, Baltimore, MD 21204, USA |