| Affiliation: | Astronomy Centre, University of Sussex, Falmer, Brighton, BN1 9QJ;Institute for Cosmic Ray Research, University of Tokyo, 5-1-5 Kashiwa, Kashiwa City, Chiba 277-8582, Japan;School of Physics and Astronomy, University of Nottingham, University Park, Nottingham, NG7 2RD;Department of Astronomy and Research Centre for the Early Universe, School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan;Apache Point Observatory, PO Box 59, Sunspot, NM 88349, USA;Department of Astronomy, University of Illinois, 1002 W Green Street, Urbana, IL 61801, USA |
