The formation of multiple populations in the globular cluster 47 Tuc

  title={The formation of multiple populations in the globular cluster 47 Tuc},
  author={Paolo Ventura and Marcella Di Criscienzo and Francesca D’Antona and Enrico Vesperini and Marco Tailo and Flavia Dell’Agli and A. D'ercole},
  journal={Monthly Notices of the Royal Astronomical Society},
We use the combination of photometric and spectroscopic data of 47 Tuc stars to reconstruct the possible formation of a second generation of stars in the central regions of the cluster, from matter ejected from massive Asymptotic Giant Branch stars, diluted with pristine gas. The yields from massive AGB stars with the appropriate metallicity (Z=0.004, i.e. [Fe/H]=-0.75) are compatible with the observations, in terms of extension and slope of the patterns observed, involving oxygen, nitrogen… 

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