Round dynamical models of the Galactic halo

Astronomy and Astrophysics – Astronomy

Scientific paper

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Astronomical Models, Dynamic Models, Galaxies, Halos, Stellar Motions, Line Of Sight, Velocity Distribution

Scientific paper

It is demonstrated that round dynamical models can be fitted to available population II star kinematical data provided that the models are not constrained to be scale-free. The kinematical behavior is illustrated using a Michie-Bodenheimer type model modified by adding stars on circular orbits in the outer part of the Galactic halo. Line-of-sight velocity dispersions, of a q = 0.80 model of the present type, in the 18 Galactic halo bins of Levison and Richstone (1986) are presented.

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