Evolution toward equiparitation in galaxy clusters and its effect on virial M/L estimates

Details Evolution toward equiparitation in galaxy clusters and its effect on virial M/L estimates Evolution toward equiparitation in galaxy clusters and its effect on virial M/L estimates

Apr 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983mnras.203..223b&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 203, Apr. 1983, p. 223-234.

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18

Astronomical Models, Equipartition Theorem, Galactic Clusters, Galactic Evolution, Dark Matter, Energy Dissipation, Mass, Scaling Laws, Virial Theorem

Scientific paper

Clusters containing dark matter as well as visible galaxies may undergo significant evolution over a Hubble time as the galaxies and the dark matter attempt to reach equipartition. As the cluster evolves, mass segregation occurs, causing virial mass measurements to underestimate the total cluster mass. A simple theory of cluster evolution is used to evaluate this effect. It sucessfully accounts for the observed correlations between virial M/L ratios and other cluster parameters.

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