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John Phillips edited Intro.tex
over 9 years ago
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The standard picture of the evolution of substructure in the Universe involves the collapse of dark matter into halos, which may host luminous galaxy. Such halos may exist within the bounds of larger halos; in these cases the galaxies they may host are thought of as satellite galaxies, and their evolution differs substantially from galaxies that are not satellites in ways not fully understood. The spatial and kinematic distributions of such galaxies can inform our ideas of how satellites and the systems in which they are found evolve. Substantial evidence exists that satellite galaxies are not isotropically distributed around their hosts\cite{Bailin_2008}, nor are their velocities isotropic \cite{Faltenbacher_2010}. This is also something seen in simulations \cite{*}.
Local group satellites are highly anisotropically distributed both around the Milky Way and M31. The
distribution disk-like arrangement of MW satellites
was first pointed out by \citet{Lynden-Bell74} and confirmed by later
This raises the question: Are similar patterns observable outside the local group?