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Gaia results for star clusters and dwarf galaxies in the Milky Way

Published online by Cambridge University Press:  11 March 2020

Davide Massari Open the ORCID record for Davide Massari [Opens in a new window]
Davide Massari*
Affiliation:
Kapteyn Astronomical Institute, University of Groningen, NL-9747 ADGroningen, Netherlands email: [email protected]
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Abstract

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The second data release of the Gaia mission coupled with ground-based spectroscopic observations has allowed the determination of the orbital parameters for almost all of the Galactic globular clusters, as well as for the known dwarf spheroidal galaxies orbiting the Milky Way. Moreover, it has led to the discovery of dwarf galaxies that were accreted by the Galaxy long ago and that are now completely disrupted. By exploiting their dynamics in combination with the globular clusters age-metallicity relation, we investigated the clusters-to-dwarfs connection. We found that about 60 globulars likely formed in situ, and associated those that were accreted to the dwarf galaxy progenitor they likely formed in.

Keywords

Galaxy: globular clusters: generalGalaxy: kinematics and dynamicsGalaxy: evolution
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. 472 - 477
Copyright
© International Astronomical Union 2020

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