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Modelling rich clusters of galaxies

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We develop a self-consistent dynamical model for spherically-symmetric clusters of galaxies. The total mass profile and velocity dispersion profiles of galaxies are derived by taking both, galaxies and intracluster gas, in hydrostatic equilibrium, and by assuming the latter to follow a polytropic distributionT∼ρλ−1. We use the strongest and better established correlations among observed properties of clusters to fix the values of the resulting free parameters, and so, to reduce the general freedom of the model.

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Solanes, J.M., Salvador-Solé, E. Modelling rich clusters of galaxies. Astrophys Space Sci 171, 3–8 (1990). https://doi.org/10.1007/BF00646811

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  • Total Mass
  • Free Parameter
  • Velocity Dispersion
  • Hydrostatic Equilibrium
  • Mass Profile