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We present an imaging analysis of four low mass stellar clusters (< 5000 Mo)in the outer regions of the LMC in order to shed light on the extended mainsequence turn-off (eMSTO) phenomenon observed in high mass clusters. The fourclusters have ages between 1-2 Gyr and two of them appear to host eMTSOs. Thediscovery of eMSTOs in such low mass clusters - > 5 times less massive than theeMSTO clusters previously studied - suggests that mass is not the controllingfactor in whether clusters host eMSTOs. Additionally, the narrow extent of theeMSTO in the two older (~ 2 Gyr) clusters is in agreement with predictions ofthe stellar rotation scenario, as lower mass stars are expected to bemagnetically braked, meaning that their CMDs should be better reproduced bycanonical simple stellar populations. We also performed a structural analysison all the clusters and found that a large core radius is not a requisite for acluster to exhibit an eMSTO.

Extended Main Sequence Turn-Offs in Low Mass Intermediate Age Clusters