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The Presence of Two Distinct Red Giant Branches in the Globular Cluster NGC 1851
Han, Sang-Il,Lee, Young-Wook,Joo, Seok-Joo,Sohn, Sangmo Tony,Yoon, Suk-Jin,Kim, Hak-Sub,Lee, Jae-Woo 한국우주과학회 2009 한국우주과학회보 Vol.18 No.2
There is a growing body of evidence for the presence of multiple stellar populations in some globular clusters, including NGC 1851. For most of these peculiar globular clusters, however, the evidence for the multiple red giant-branches (RGBs) having diffe