`Status update' for the AGB scenario for the formation of multiple populations

Abstract

The Asymptotic Giant Branch (AGB) scenario for the formation of multiple populations has been quantitatively studied in the course of the latest twenty years, examining the aspects both of nucleosynthesis and of the dynamics of formation of new stars in a cooling flow at the center of the first generation cluster, and of the following N{body evolution. The large complex of these studies finds many validations in the properties of multiple populations. Here I shortly summarize recent accomplishments in the study of the evolution of massive AGBs and super-AGBs including the the explanation of anomalous high lithium abundances in `extreme' second generation stars in wCen and NGC2808.

4 pages in "Star Clusters: From the Milky Way to the Early Universe", Proceedings IAU Symposium No. 351, 2019 A. Bragaglia, M.B. Davies, A. Sills & E. Vesperini, eds

References in corpus (7)

• Formation and Dynamical Evolution of Multiple Stellar Generations in Globular Clusters
• Accretion of pristine gas and dilution during the formation of multiple-population globular clusters
• Lithium abundances in globular cluster giants: NGC 1904, NGC 2808, and NGC 362
• Multiple stellar populations and their evolution in globular clusters: A nucleosynthesis perspective
• Magnesium isotopes: a tool to understand self-enrichment in Globular Clusters
• The Lithium test for multiple populations in Globular Clusters: Lithium in NGC 2808
• Self-enrichment in Globular Clusters: the extreme He-rich population of NGC 2808