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It is generally accepted today that Galactic globular clusters (GGCs) consistof at least two generations of stars that are different in their chemicalcomposition and perhaps age. However, knowledge about the kinematicalproperties of these stellar generations, which may provide importantinformation for constraining evolutionary scenarios of the GGCs, is stilllimited. We therefore study the connections between chemical and kinematicalproperties of different stellar generations in the Galactic globular cluster 47Tuc. To achieve this goal, we used abundances of Li, O, and Na determined in101 main sequence turn-off (TO) stars with the aid of 3D hydrodynamical modelatmospheres and NLTE abundance analysis methodology. We divided our sample TOstars into three groups according to their position in the [Li/Na]-[Na/O] planeto study their spatial distribution and kinematical properties. We find thatthere are statistically significant radial dependencies of lithium and oxygenabundances, A(Li) and A(O), as well as that of [Li/Na] abundance ratio. Ourresults show that first-generation stars are less centrally concentrated anddynamically hotter than stars belonging to subsequent generations. We also finda significant correlation between the velocity dispersion and O and Naabundance, and between the velocity dispersion and the [Na/O] abundance ratio.

Galactic globular cluster 47 Tucanae: new ties between the chemical and dynamical evolution of globular clusters?