Changmin Kim(Department of Astronomy, Space Science and Geology, Chungnam National University, Daejeon 34134, Korea)
Young Sun Lee(Department of Astronomy and Space Science, Chungnam National University, Daejeon 34134, Korea, Department of Physics and Astronomy and JINA Center for the Evolution of the Elements, University of Notre Dame, IN 46556, USA)
Young Kwang Kim(Department of Astronomy and Space Science, Chungnam National University, Daejeon 34134, Korea)
Timothy C. Beers(Department of Physics and Astronomy and JINA Center for the Evolution of the Elements, University of Notre Dame, IN 46556, USA)