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The dynamics of Andromeda's dwarf galaxies and stellar streams

Published online by Cambridge University Press:  21 March 2017

Michelle L. M. Collins ,
R. Michael Rich ,
Rodrigo Ibata ,
Nicolas Martin ,
Janet Preston  and
The PAndAS collaboration
Michelle L. M. Collins
Affiliation:
Department of Physics, University of Surrey, Guildford, GU2 7XH, UK email: m.collins@surrey.ac.uk
R. Michael Rich
Affiliation:
Dept. of Astronomy UCLA, Los Angeles CA, USA
Rodrigo Ibata
Affiliation:
L'Observatoire de Strasbourg, Strasbourg, France
Nicolas Martin
Affiliation:
L'Observatoire de Strasbourg, Strasbourg, France
Janet Preston
Affiliation:
Department of Physics, University of Surrey, Guildford, GU2 7XH, UK email: m.collins@surrey.ac.uk
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Abstract

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As part of the Z-PAndAS Keck II DEIMOS survey of resolved stars in our neighboring galaxy, Andromeda (M31), we have built up a unique data set of measured velocities and chemistries for thousands of stars in the Andromeda stellar halo, particularly probing its rich and complex substructure. In this contribution, we will discuss the structural, dynamical and chemical properties of Andromeda's dwarf spheroidal galaxies, and how there is no observational evidence for a difference in the evolutionary histories of those found on and off M31's vast plane of satellites. We will also discuss a possible extension to the most significant merger event in M31 - the Giant Southern Stream - and how we can use this feature to refine our understanding of M31's mass profile, and its complex evolution.

Keywords

Galaxiesdwarf galaxiesstellar populations
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 11 , Symposium S321: Formation and Evolution of Galaxy Outskirts , March 2016 , pp. 16 - 18
Copyright
Copyright © International Astronomical Union 2017 

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