jcm@cfa.harvard.edu d.clements@ic.ac.uk

¹ Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138
² Physics Department, Imperial College, Prince Consort Road, London SW7 2BW, UK
³ Center for Theoretical Astrophysics, Departments of Physics and Astronomy, Loomis Laboratory, University of Illinois, 1110 West Green Street, Urbana, IL 61801
⁴ Department of Astronomy, University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85721-0065
⁵ Center for Theoretical Astrophysics, Department of Physics, Loomis Laboratory, University of Illinois, 1110 West Green Street, Urbana, IL 61801
⁶ lnstituto de Estructura de la Materia (CSIC), Serrano 121, 28006 Madrid, Spain
⁷ ARI, Liverpool John Moores University, Twelve Quays House, Egerton Wharf, Birkenhead, Wirral, Cheshire, CH41 1LD, UK
⁸ Raytheon Information Technology and Sciences Services, NASA Goddard Space Flight Center, Greenbelt, MD 20771
⁹ Department of Physics and Astronomy, Cardiff University, P.O. Box 913, Cardiff, CF24 3YB, UK
¹⁰ Space Telescope Science Institute, ESA Space Telescope Division, 3700 San Martin Drive, Baltimore, MD 21218