Dynamical Models of Spherical Galaxies with Massive Halo

Details Dynamical Models of Spherical Galaxies with Massive Halo Dynamical Models of Spherical Galaxies with Massive Halo

Mar 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003jass...20...63c&link_type=abstract

Journal of Astronomy and Space Sciences. Vol. 20, no. 1, p63-82

Astronomy and Astrophysics

Astronomy

Spherical Galaxy, Dark Matter, Dark Halo

Scientific paper

Using the Schwarzschild's linear programming technique, we obtained the general solutions of the collisionless Bolzmann equation describing the spherical galaxy in dynamical equilibrium. From this calculation we have confirmed the existence of isotropic spherical galaxies obeying a de Vaucouleurs' law which includes a dark halo. The flattening profile of the velocity dispersion curve seen in the elliptical galaxies can be explained as the increase of mass to light ratio in this dark matter. The space density distribution of this dark matter shows that the core radius of the dark matter is smaller than the effective radius of the galaxy.

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