Multiple populations in globular clusters
Over the past two years, I have become increasingly interested in the problem of multiple stellar populations in globular clusters. The origin of chemically distinct populations of stars in these ancient systems is still mysterious and heavily debated.
My recent efforts have focused on exploring and highlighting the potential of stellar kinematics to probe the formation of multiple populations. In Hénault-Brunet et al. (2015), we performed N-body simulations and identified the differential rotation of subpopulations as a key signature to distinguish between the various formation scenarios proposed. I am now working on testing these predictions with a combination of archival data and new spectroscopic observations on VLT-FLAMES.