We present an imaging analysis of four low mass stellar clusters (<~5000M_{sun}_) in the outer regions of the LMC in order to shed light on the extended main sequence turn-off (eMSTO) phenomenon observed in high mass clusters. The four clusters have ages between 1-2Gyr and two of them appear to host eMTSOs. The discovery of eMSTOs in such low mass clusters - more than 5 times less massive than the eMSTO clusters previously studied - suggests that mass is not the controlling factor in whether clusters host eMSTOs. Additionally, the narrow extent of the eMSTO in the two older clusters (~2Gyr) is in agreement with predictions of the stellar rotation scenario, as lower mass stars are expected to be magnetically braked, meaning that their colour magnitude diagrams should be better reproduced by canonical simple stellar populations. We also performed a structural analysis on all the clusters and found that a large core radius is not a requisite for a cluster to exhibit an eMSTO.

Cone search capability for table J/A+A/590/A50/table2 (Magnitudes and colours of stars in the field of LW 477)

Cone search capability for table J/A+A/590/A50/table3 (Magnitudes and colours of stars in the field of LW 483)

Cone search capability for table J/A+A/590/A50/table4 (Magnitudes and colours of stars in the field of KMHK 1751)

Cone search capability for table J/A+A/590/A50/table5 (Magnitudes and colours of stars in the field of KMHK 1754)