JEONGHYEON AHN(Department of Physics & Astronomy, Seoul National University, Seoul 08826, Korea)
WOONG-TAE KIM(Department of Physics & Astronomy, Seoul National University, Seoul 08826, Korea, SNU Astronomy Research Center, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea)
YONGHWI KIM(Korea Institute of Science and Technology Information, 245 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea)