¹ Department of Physics, University of California at Davis, Davis, CA 95616
² IGPP/Lawrence Livermore National Laboratory, Livermore, CA 94550
³ Institute for Advanced Study, Olden Lane, Princeton, NJ 08540
⁴ Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218
⁵ Princeton University Observatory, Princeton, NJ 08544
⁶ Fermi National Accelerator Laboratory, P.O. Box 500, Batavia, IL 60510
⁷ Apache Point Observatory, P.O. Box 49, Sunspot, NM 88349
⁸ Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, PA 15260
⁹ Department of Physics and Astronomy, Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218
¹⁰ Department of Physics of Complex Systems, Eötvös University, H-1117 Budapest, Hungary
¹¹ Department of Astronomy and Research Center for the Early Universe, School of Science, University of Tokyo, Hongo, Bunkyo, Tokyo 113-0033, Japan
¹² US Naval Observatory, 3450 Massachusetts Avenue, NW, Washington, DC 20392-5420
¹³ Astronomy and Astrophysics Center, University of Chicago, 5640 South Ellis Avenue, Chicago, IL 60637
¹⁴ Department of Physics, University of Michigan, 500 East University, Ann Arbor, MI 48109
¹⁵ US Naval Observatory, Flagstaff Station, P.O. Box 1149, Flagstaff, AZ 86002-1149
¹⁶ Department of Physics, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, PA 15232
¹⁷ Department of Astronomy and Astrophysics, Pennsylvania State University, University Park, PA 16802
¹⁸ Enrico Fermi Institute, 5640 South Ellis Avenue, Chicago, IL 60637