Dr. Killen has extensive experience in atmospheric modeling. Her dissertation dealt with deriving the structure and composition of the atmosphere of Saturn from radiative transfer calculations of methane and ammonia bands. Her post-doctoral work at Goddard Space Flight Center involved developing a radiation transfer code for the infrared and radio spectrum, and using it for analysis and interpretation of radio observations of Uranus, Neptune, and Saturn. She worked in the Department of Meteorology at the University of Maryland deriving realistic radiation transfer algorithms models for scenes with broken cloud cover for use in global climate studies. She has published extensively on the exosphere of Mercury, using radiative transfer calculations to derive abundance distributions and calculating limits to source rates by diffusion, sputtering and impact processes, and diffusion of gases from the interior. She is modeling the exosphere of Mercury, concentrating on radiative transfer and modeling for an exosphere in contact with the surface, and on source processes. She has observed Mercury, the moon and the Galilean satellites at the McMath-Pierce solar telescope, the W.M. Keck Telescope, and at the Anglo-Australian Observatory. All observing runs have resulted in significant publications.

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Department of Astronomy, University of Maryland College Park, MD 20742-2421
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