Modelling rich clusters of galaxies

Details Modelling rich clusters of galaxies Modelling rich clusters of galaxies

Sep 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990ap%26ss.171....3s&link_type=abstract

(IAU, European Regional Astronomy Meeting, 11th, La Laguna, Spain, July 3-8, 1989) Astrophysics and Space Science (ISSN 0004-640

Astronomy and Astrophysics

Astrophysics

Astronomical Models, Dark Matter, Galactic Clusters, Intergalactic Media, Mass Distribution, Velocity Distribution, Astronomical Photometry, Distribution Functions, Galactic Evolution, Hydrostatics

Scientific paper

A self-consistent dynamical model for spherically-symmetric clusters of galaxies is developed. 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 distribution T about rho exp(gamma-1). The strongest and better established correlations among observed properties of clusters are used to fix the values of the resulting free parameters, and so, to reduce the general freedom of the model.

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