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Ram Pressure Stripping of Spiral Galaxies in Clusters

Published online by Cambridge University Press:  26 May 2016

Elke Schumacher  and
Gerhard Hensler
Elke Schumacher
Affiliation:
Institut für Theoretische Physik und Astrophysik, Universität Kiel, Olshausenstr. 40, 24098 Kiel, Germany
Gerhard Hensler
Affiliation:
Institut für Theoretische Physik und Astrophysik, Universität Kiel, Olshausenstr. 40, 24098 Kiel, Germany

Abstract

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We investigate the process of ram pressure stripping by means of numerical simulations with a 2D hydrodynamical code. We present some first results of a set of simulations with varying galaxy velocities and ICM densities. We find that in typical cluster core environments disk galaxies lose a substantial amount of their gas, whereas in the outskirts of galaxy clusters the mass loss is quite small. Furthermore, the gas loss happens in two phases: In the initial phase gas is pushed out of regions where the ram pressure overcomes the gravitational restoring force; most of the overall gas loss happens in this phase. Afterwards the Kelvin-Helmholtz instability leads to a further mass loss at a small rate, that could be important on long timescales.

Type
Part 3. Ejection and Outflow
Information
Symposium - International Astronomical Union , Volume 217: Recycling Intergalactic and Interslettar Matter , 2004 , pp. 376 - 381
Copyright
Copyright © Astronomical Society of the Pacific 2004 

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