mmuno@srl.caltech.edu feb@astro.columbia.edu

¹ Space Radiation Laboratory, California Institute of Technology, Pasadena, CA 91104, USA
² Columbia Astrophysical Laboratory, New York, NY 10027, USA
³ Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
⁴ Department of Astronomy, University of Florida, Gainesville, FL 32611, USA
⁵ Department of Astronomy and Radio Astronomy Laboratory, University of California, Berkeley, CA 94720-3411, USA
⁶ Department of Astronomy and Astrophysics, The Pennsylvania State University, University Park, PA 16802, USA
⁷ SETI Institute, 515 N. Whisman Rd., Mountain View, CA 94043, USA
⁸ Department of Physics and Engineering, Sweet Briar College, Sweet Briar, VA 24595, USA
⁹ Remote Sensing Division, Naval Research Laboratory, Washington, DC 20375-5351, USA
¹⁰ Department of Physics and Astronomy, University of Iowa, Van Allen Hall, Iowa City, IA 52242, USA
¹¹ Astronomical Institute "Anton Pannekoek," University of Amsterdam, Kruislaan 403, 1098 SJ, The Netherlands
¹² Department of Physics and Astronomy, University of California, Los Angeles, CA 90095, USA
¹³ Department of Astronomy, Kyoto University, Kyoto 606-8502, Japan
¹⁴ National Astronomical Observatory of Japan (NAOJ), National Institutes of Natural Sciences (NINS), Tokyo 181-8588, Japan
¹⁵ Spitzer Science Center, California Institute of Technology, Pasadena, CA 91125, USA
¹⁶ Astronomy Department, University of Massachusetts, Amherst, MA 01003, USA
¹⁷ Department of Physics, McGill University, Montreal, QC H3A 2T8, Canada
¹⁸ Department of Physics and Astronomy, Northwestern University, Evanston, IL 60208, USA