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Rediscovering the origins of the stellar halo with chemical tagging

Published online by Cambridge University Press:  02 August 2018

Sarah L Martell Open the ORCID record for Sarah L Martell [Opens in a new window]
Sarah L Martell*
Affiliation:
School of Physics University of New South Wales 2052 Sydney, Australia email: s.martell@unsw.edu.au
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Abstract

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The Galactic halo has a complex assembly history, which can be seen in its wealth of kinematic and chemical substructure. Globular clusters lose stars through tidal interactions with the Galaxy and cluster evaporation processes, meaning that they are inevitably a source of halo stars. These “migrants” from globular clusters can be recognized in the halo field by the characteristic light element abundance anticorrelations that are commonly observed only in globular cluster stars, and the number of halo stars that can be chemically tagged to globular clusters can be used to place limits on the formation pathways of those clusters.

Keywords

stars: abundancesGalaxy: haloglobular clusters: general
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 13 , Symposium S334: Rediscovering our Galaxy , July 2017 , pp. 38 - 42
Copyright
Copyright © International Astronomical Union 2018 

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