Youngwoo Choi(Department of Physics and Astronomy, Seoul National University, Seoul 08826, Republic of Korea)
Woojin Kwon(Department of Earth Science Education, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea, SNU Astronomy Research Center, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea, The Center for Educational Research, Seoul National University, Gwanak-ro 1, Gwanak-gu, Seoul 08826, Korea)
Leslie W. Looney(Department of Astronomy, University of Illinois, 1002 West Green Street, Urbana, IL 61801, USA)
John J. Tobin(National Radio Astronomy Observatory, 520 Edgemont Road, Charlottesville, VA 22903, USA)