Ultraviolet emission from CG's coma: fluorescence versus electron-impact excitation

Eric Schindhelm1, Michael F A'Hearn2, Lori M Feaga2, Paul D Feldman3, Kathleen Mandt4, Joel Wm. Parker5, Andrew Steffl6, Alan Stern7 and Harold A Weaver Jr8, (1)Southwest Research Institute Boulder, Boulder, CO, United States, (2)University of Maryland, College Park, MD, United States, (3)Johns Hopkins University, Physics and Astronomy, Baltimore, MD, United States, (4)Southwest Research Institute, San Antonio, TX, United States, (5)Southwest Research Institute Boulder, Boulder, United States, (6)Southwest Research Institute Boulder, Dept Space Studies, Boulder, CO, United States, (7)Southwest Research Institute, Boulder, CO, United States, (8)Johns Hopkins Applied Physics Laboratory, Laurel, MD, United States