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arXiv · astro-ph/9603106

Kinematics of the Outer Stellar Halo

Chris Flynn·Jesper Sommer-Larsen·Per Rex Christensen
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Abstract

We have tested whether the simple model for the kinematics of the Galactic stellar halo (in particular the outer halo) proposed by Sommer-Larsen, Flynn and Christensen (SLFC) is physically realizable, by directly integrating particles in a 3-D model of the Galactic potential. We are able to show that the SLFC solution can be realized in terms of a distribution of particles with stationary statistical properties in phase-space. Hence, the SLFC model, which shows a notable change in the anisotropy from markedly radial at the sun to markedly tangential beyond about Galactocentric radius r=20 kpc, seems a tenable description of outer halo kinematics.

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Chris Flynn, Jesper Sommer-Larsen, Per Rex Christensen. 1996-03-20. Kinematics of the Outer Stellar Halo. https://doi.org/10.1093/mnras%2F281.3.1027

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