Institution: | School of Physics and Astronomy, University of Nottingham, Nottingham NG7 2RD; Department of Astronomy and Astrophysics, University of Toronto, 60 St George Street, Toronto, ON, M5S 3H8, Canada; Department of Physics &Astronomy, Minnesota State University, Mankato, MN 56003, USA; Department of Astronomy, The Ohio State University, 140 W. 18th Avenue, Columbus, OH 43210, USA |