Chae Kyung Sim, Kyung Hee University, Yongin, Korea, Republic of (South), Sungsoo Kim, Kyung Hee University, Yongin, South Korea, Minsup Jeong, KASI Korea Astronomy and Space Science Institute, Daejeon, South Korea and Young-Jun Choi, KASI Korea Astronomy and Space Science Institute, Daejeon, Korea, Republic of (South)