Kinematics of the Outer Stellar Halo
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.
Cite
@article{arxiv.astro-ph/9603106,
title = {Kinematics of the Outer Stellar Halo},
author = {Chris Flynn and Jesper Sommer-Larsen and Per Rex Christensen},
journal= {arXiv preprint arXiv:astro-ph/9603106},
year = {2015}
}
Comments
13 pages, 6 figures, accepted for publication in MNRAS. also available at http://astro.utu.fi/~cflynn/papers/fslc4/fslc4.html