1. Department of Physics and Joint Institute for Nuclear Astrophysics, Western Michigan University, Kalamazoo, Michigan, USA.
2. National Astronomical Observatory of Japan, Tokyo, Japan.
3. School of Physics, Beihang University (Beijing University of Aeronautics and Astronautics), Beijing, P.R. China.
4. Department of Physics, Department of Astronomy, The Ohio State University, Columbus, Ohio, USA.
5. Graduate School of Science, University of Tokyo, Tokyo, Japan.
6. Laboratory for Advanced Nuclear Energy, Institute of Innovative Research, Tokyo Institute of Technology, Tokyo, Japan.
7. Department of Chemistry, Western Michigan University, Kalamazoo, Michigan, USA.
8. Department of Astronomy, Graduate School of Science, University of Tokyo, Tokyo, Japan.
9. Department of Physics, Meisei University, Tokyo, Japan.
10. Department of Physics, Nihon University, Tokyo, Japan.