Journal of Astronomy and Space Sciences (Mar 2003)

Dynamical Models of Spherical Galaxies with Massive Halo

  • Mun-Suk Chun,
  • Hun-Sung Ko,
  • Young-Jong Sohn

DOI
https://doi.org/10.5140/JASS.2003.20.1.063
Journal volume & issue
Vol. 20, no. 1
pp. 63 – 82

Abstract

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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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