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2005MNRAS.357..478S - Mon. Not. R. Astron. Soc., 357, 478-488 (2005/February-3)
Simulating galaxy clusters - III. Properties of the intracluster stars.
SOMMER-LARSEN J., ROMEO A.D. and PORTINARI L.
Abstract (from CDS):
The IC stars are kinematically significantly colder than the cluster galaxies: the velocity dispersions of the IC stars are in the inner parts of the clusters (r∼ 100-500 kpc) only approximately half of those of the cluster galaxies, increasing slightly outward to approximately 70 per cent at r= 1-2 Mpc. The typical projected velocity dispersion in the Virgo-like cluster at R≳ 50 kpc is 300-600 km/s, depending on orientation and projected distance from the cluster centre. Rotation is found to be dynamically insignificant for the IC stars. The velocity distributions of IC stars and clusters galaxies are highly radially anisotropic in one cluster and in the other close to being isotropic.
Abstract Copyright: 2005 RAS
Journal keyword(s): galaxies: clusters: general - galaxies: evolution - galaxies: formation - cosmology: theory
Simbad objects: 6
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