The turn-on in the 40 Myr-old cluster NGC1818 exclude the presence of possible age differences among cluster stars, unveiling the origin of the extended main-sequence turn-off in young Magellanic Clouds clusters
By exploiting recent work based on Gaia, half of the known Type II GCs appear clustered in a distinct region of the integral of motions space, thus suggesting a common progenitor galaxy. Except for these Type II GCs, we do not find any significant difference in the MPs between clusters associated with different progenitors.