1. Department of Physics, Gonzaga University, 502 E Boone Ave., Spokane, WA 99258, USA
2. Astronomy Department, University of Texas at Austin, Austin, TX 78712, USA
3. Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA
4. School of Physics and Astronomy, University of Minnesota, 116 Church St. SE, Minneapolis, MN 55455, USA
5. William I. Fine Theoretical Physics Institute, University of Minnesota, 116 Church St. SE, Minneapolis, MN 55455, USA
6. Minnesota Institute for Astrophysics, University of Minnesota, 116 Church St. SE, Minneapolis, MN 55455, USA
7. Department of Astronomy, The Ohio State University, 140 W 18th Ave., Columbus, OH 43210, USA
8. Center for Cosmology & Astroparticle Physics, The Ohio State University, 191 West Woodruff Ave., Columbus, OH 43210, USA
9. Department of Astronomy, Indiana University, 727 East Third St., Bloomington, IN 47405, USA