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We present a multiple population search in two old Large Magellanic Cloud(LMC) Globular Clusters, Hodge 11 and NGC 2210. This work uses data from theAdvanced Camera for Surveys and Wide Field Camera 3 on the Hubble SpaceTelescope from programme GO-14164 in Cycle 23. Both of these clusters exhibit abroadened main sequence with the second population representing ($20 \pm \!\sim \! 5$)% for NGC 2210 and ($30 \pm \! \sim \! 5$)% for Hodge 11. In bothclusters, the smaller population is redder than the primary population,suggesting CNO variations. Hodge 11 also displays a bluer second population inthe horizontal branch, which is evidence for helium enhancement. However, eventhough NGC 2210 shows similarities to Hodge 11 in the main sequence, there doesnot appear to be a second population on NGC 2210's horizontal branch. This isthe first photometric evidence that ancient LMC Globular Clusters exhibitmultiple stellar populations.

monthly notices of the royal astronomical society

Exploring the nature and synchronicity of early cluster formation in the  Large Magellanic Cloud IV: Evidence for Multiple Populations in Hodge 11 and  NGC 2210