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Globular cluster tidal interactions and mergers in the Galactic disc

Published online by Cambridge University Press:  11 March 2020

Alessandra Mastrobuono-Battisti Open the ORCID record for Alessandra Mastrobuono-Battisti [Opens in a new window] ,
Sergey Khoperskov ,
Paola Di Matteo  and
Misha Haywood
Alessandra Mastrobuono-Battisti
Affiliation:
Max-Planck-Institut für Astronomie Königstuhl 17, D-69117, Heidelberg, Germany email: [email protected]
Sergey Khoperskov
Affiliation:
Max-Planck-Institut für extraterrestrische Physik Gießenbachstrasse 1, 85748 Garching, Germany Institute of Astronomy, Russian Academy of SciencePyatnitskaya st., 48, 119017 Moscow, Russia
Paola Di Matteo
Affiliation:
GEPI Observatoire de Paris, PSL Research University, CNRSPlace Jules Janssen, F-92195 Meudon Cedex, France
Misha Haywood
Affiliation:
GEPI Observatoire de Paris, PSL Research University, CNRSPlace Jules Janssen, F-92195 Meudon Cedex, France
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Abstract

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The Galactic globular cluster system went and is still going through dynamical processes that require to be explored in detail. Here we illustrate how primordial massive globular clusters born in the Milky Way’s disc evolved by stripping material from each other or even merging very early during their lives. These processes might explain the puzzling presence of star-by-star spreads in iron content observed in massive globular clusters and should be taken into account when studying globular cluster stellar populations. In this context, we show how the direct comparison between the predictions provided by our direct N-body simulations and observations can shed light on the origin and chemo-dynamical evolution of globular clusters.

Keywords

Galaxy: diskGalaxy: evolutionGalaxy: formationGalaxy: kinematics and dynamicsglobular clusters: general
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. 442 - 446
Copyright
© International Astronomical Union 2020

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