Jae Woo Lee(Korea Astronomy and Space Science Institute)
Jae-Hyuck Youn(Korea Astronomy and Space Science Institute, Department of Astronomy and Space Science, Chungnam National University)
Chun-Hwey Kim(Department of Astronomy and Space Science, College of Natural Science and Institute of Basic Science Research, Chungbuk National University)
Chung-Uk Lee(Korea Astronomy and Space Science Institute, Department of Astronomy and Space Science, College of Natural Science and Institute of Basic Science Research, Chungbuk National University)