1. Max-Planck-Institute for Astronomy , Königstuhl 17, D-69117 Heidelberg , Germany
2. Department of Astronomy, Ohio State University , 140 W. 18th Avenue, Columbus, OH 43210 , USA
3. Astronomical Observatory, University of Warsaw , Al. Ujazdowskie 4, PL-00-478 Warszawa , Poland
4. Department of Earth and Space Science, Graduate School of Science, Osaka University , Toyonaka, Osaka 560-0043 , Japan
5. IPAC, Mail Code 100-22, Caltech , 1200 E. California Blvd., Pasadena, CA 91125 , USA
6. Center for Astrophysics, Harvard & Smithsonian , 60 Garden Street, Cambridge, MA 02138 , USA
7. Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive , Pasadena, CA 91109 , USA
8. Department of Physics and Astronomy, Texas Tech University , 1200 Memorial Circle, Lubbock, TX 79409 , USA
9. Department of Particle Physics and Astrophysics, Weizmann Institute of Science , Rehovot 7610001 , Israel
10. Department of Physics and Astronomy, Michigan State University , 567 Wilson Road, East Lansing, MI 48824 , USA
11. Department of Physics, University of Warwick , Gibbet Hill Road, Coventry CV4 7AL , UK
12. Institute for Space-Earth Environmental Research, Nagoya University , Nagoya 464-8601 , Japan
13. Code 667, NASA Goddard Space Flight Center , Greenbelt, MD 20771 , USA
14. Department of Astronomy, University of Maryland , College Park, MD 20742 , USA
15. Institute of Natural and Mathematical Sciences, Massey University , Auckland 0745 , New Zealand
16. Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033 , Japan
17. Instituto de Astrofísica de Canarias , Vía Láctea s/n, E-38205 La Laguna, Tenerife , Spain
18. Institute of Astronomy, Graduate School of Science, The University of Tokyo , 2-21-1 Osawa, Mitaka, Tokyo 181-0015 , Japan
19. Department of Physics, The Catholic University of America , Washington, DC 20064 , USA
20. Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency , 3-1-1 Yoshinodai, Chuo, Sagamihara, Kanagawa 252-5210 , Japan
21. Sorbonne Université, CNRS , UMR 7095, Institut d’Astrophysique de Paris, 98 bis bd Arago, F-75014 Paris , France
22. Department of Physics, University of Auckland , Private Bag 92019, Auckland 1442 , New Zealand
23. University of Canterbury Mt. John Observatory , PO Box 56, Lake Tekapo 8770 , New Zealand