blane@mit.edu jsokolos@cfa.harvard.edu retter@astro.psu.edu thompson@ipac.caltech.edu

¹ Kavli Institute for Astrophysics and Space Research, MIT Department of Physics, Cambridge, MA
² Smithsonian Astrophysical Observatory, Cambridge, MA
³ The Johns Hopkins University, Baltimore, MD
⁴ NASA/GSFC, NASA Goddard Space Flight Center, Greenbelt, MD
⁵ Jet Propulsion Laboratory, Pasadena, CA
⁶ Astronomy and Astrophysics Department, Penn State University, University Park, PA
⁷ Townes Fellow, Space Sciences Laboratory, University of California, Berkeley, CA
⁸ Michelson Science Center, California Institute of Technology, Pasadena, CA
⁹ Miller Fellow, University of California at Berkeley, Berkeley, CA