SIMBAD references

2015ApJ...799..171B - Astrophys. J., 799, 171 (2015/February-1)

Trends in dwarf early-type kinematics with cluster-centric radius driven by tidal stirring.

BENSON A.J., TOLOBA E., MAYER L., SIMON J.D. and GUHATHAKURTA P.

Abstract (from CDS):

We model the dynamics of dwarf early-type galaxies in the Virgo cluster when subject to a variety of environmental processes. We focus on how these processes imprint trends in the dynamical state (rotational versus pressure support as measured by the λRe/2* statistic) with projected distance from the cluster center, and compare these results to observational estimates. We find a large scatter in the gradient of λRe/2* with projected radius. A statistical analysis shows that models with no environmental effects produce gradients as steep as those observed in none of the 100 cluster realizations we consider, while in a model incorporating tidal stirring by the cluster potential 34% of realizations produce gradients as steep as that observed. Our results suggest that tidal stirring may be the cause of the observed radial dependence of dwarf early-type dynamics in galaxy clusters.

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Journal keyword(s): galaxies: dwarf - galaxies: evolution - galaxies: interactions - galaxies: kinematics and dynamics

Simbad objects: 3

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2019.12.07-13:15:52

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