Milone, Antonino; Bedin, L R; Piotto, G; Marino, Anna; Cassisi, S; Bellini, A; Jerjen, Helmut; Pietrinferni, A; Aparicio, A; Rich, R M
Recent studies have shown that the extended main-sequence turn-off(eMSTO) is a common feature of intermediate-age star clusters in the Magellanic Clouds (MCs). The most simple explanation is that these stellar systems harbour multiple generations of stars with an age difference of a few hundred million years. However, while an eMSTO has been detected in a large number of clusters with ages between ~ 1-2 Gyr, several studies of young clusters in both MCs and in nearby galaxies do not find any...[Show more]
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