Institution: | Department of Astronomy and Space Science, Kyunghee University, Gyeunggi-do 449-701, Korea;School of Science Education, Chungbuk National University, Chungbuk 361-763, Korea;CRAL –Observatoire de Lyon 9, avenue Charles Andre, 69561 Saint Genis Laval cedex, France;Korea Astronomy and Space Science Institute, 838 Daedukdaero, Yuseong-gu, Daejeon 305-348, Korea |