Cometary charge exchange diagnostics in UV and X - ray

1 Dept. of Astronomy, University of Maryland, College Park, MD 20742-2421, USA 2 Department of Physics and Astronomy, California State University, 18111 Nordhoff Street, Northridge, CA 91330, USA 3 Department of Physics and Astronomy, University of Leicester, Leicester, LE1 1RH, UK 4 Max-Planck-Institut für extraterrestrische Physik, Gießenbachstraße, D-85748 Garching, Germany 5 KVI Atomic Physics, University of Groningen, Zernikelaan 25, NL-9747 AA Groningen, The Netherlands 6 The University of Michigan, Ann Arbor, MI 48109-2143, USA 7 Planetary Exploration Group, Space Department, JHU-APL, 11100 Johns Hopkins Rd, Laurel, MD 20723, USA 8 Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA