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Helium variations in Galactic and extragalactic Globular Clusters

Published online by Cambridge University Press:  11 March 2020

Edoardo P. Lagioia Open the ORCID record for Edoardo P. Lagioia [Opens in a new window] ,
Antonino P. Milone Open the ORCID record for Antonino P. Milone [Opens in a new window] ,
Anna F. Marino Open the ORCID record for Anna F. Marino [Opens in a new window] ,
Aaron Dotter ,
Giacomo Cordoni Open the ORCID record for Giacomo Cordoni [Opens in a new window]  and
Marco Tailo Open the ORCID record for Marco Tailo [Opens in a new window]
Edoardo P. Lagioia
Affiliation:
Department of Physics and Astronomy, University of Padua,Via Marzolo 8, 35121, Padua, Italy email:edoardo.lagioia@unipd.it
Antonino P. Milone
Affiliation:
Department of Physics and Astronomy, University of Padua,Via Marzolo 8, 35121, Padua, Italy email:edoardo.lagioia@unipd.it
Anna F. Marino
Affiliation:
Department of Physics and Astronomy, University of Padua,Via Marzolo 8, 35121, Padua, Italy email:edoardo.lagioia@unipd.it Centro di Ateneo di Studi e Attività Spaziali “Giuseppe Colombo” CISAS, Via Venezia 15, 35131, Padua, Italy
Aaron Dotter
Affiliation:
Center For Astrophysics, Harvard & Smithsonian, 60 Garden Street, 02138, Cambridge, MA, USA
Giacomo Cordoni
Affiliation:
Department of Physics and Astronomy, University of Padua,Via Marzolo 8, 35121, Padua, Italy email:edoardo.lagioia@unipd.it
Marco Tailo
Affiliation:
Department of Physics and Astronomy, University of Padua,Via Marzolo 8, 35121, Padua, Italy email:edoardo.lagioia@unipd.it
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Abstract

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The recent measurements of internal variations of helium in Galactic and extragalactic Globular Clusters (GCs) set binding constraints to the models of formation of Multiple Populations (MPs) in GCs, and gave rise, at the same time, to crucial questions related with the influence of the environment on MP formation as well as with the role played by GCs in the early galactic formation. We present the most recent estimates of helium enrichment in the main populations of a large sample of Galactic and extragalactic GCs.

Keywords

globular clusters: generalHertzsprung-Russel diagramluminosity functiongalaxies: Magellanic Cloudsstars: abundances
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 14 , Symposium S351: Star Clusters: From the Milky Way to the Early Universe , May 2019 , pp. 312 - 316
Copyright
© International Astronomical Union 2020

References

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