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What Young Massive Clusters in the Magellanic Clouds teach us about Old Galactic Globular Clusters?

Published online by Cambridge University Press:  30 December 2019

Francesca D’Antona ,
Paolo Ventura ,
Aaron Dotter ,
Sylvia Ekström  and
Marco Tailo Open the ORCID record for Marco Tailo [Opens in a new window]
Francesca D’Antona
Affiliation:
INAF-OAR, via di Frascati 33, I-00078 Monteporzio Catone, Italy email: [email protected]
Paolo Ventura
Affiliation:
INAF-OAR, via di Frascati 33, I-00078 Monteporzio Catone, Italy email: [email protected]
Aaron Dotter
Affiliation:
Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA email: [email protected]
Sylvia Ekström
Affiliation:
Geneva Observatory, University of Geneva, Maillettes 51, CH-1290 Sauverny, Switzerland email: [email protected]
Marco Tailo
Affiliation:
Dipartimento di Fisica e Astronomia ‘Galileo Galilei’, Univ. di Padova, Vicolo dell’Osservatorio 3, I-35122 Padova, Italy email: [email protected]
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Abstract

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. The Asymptotic Giant Branch (AGB) scenario ascribes the multiple populations in old Galactic Globular Clusters (GGC) to episodes of star formation in the gas contaminated by the ejecta of massive AGBs and super-AGBs of a first stellar population. The mass of these AGBs (4-8 M⊙) today populate the Young Massive Clusters (YMC) of the Magellanic Clouds, where rapid rotation and its slowing down play an important role in shaping the color-magnitude diagram features. Consequently, we must reconsider whether the rotational evolution of these masses affects the yields, and whether the resulting abundances are compatible with the chemical patterns observed in GGC. We show the first results of a differential analysis, by computing the hot bottom burning evolution of non-rotating models with increased CNO-Na abundances at the second dredge-up, following the results of MESA rotational models.

Keywords

globular clusters: generalopen clusters and associations: generalstars: abundances
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 14 , Symposium S343: Why Galaxies Care About AGB Stars: A Continuing Challenge through Cosmic Time , August 2018 , pp. 314 - 317
Copyright
© International Astronomical Union 2019 

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