SIMBAD references

2005A&A...444..803G - Astronomy and Astrophysics, volume 444, 803-812 (2005/12-4)

Harassment origin for kinematic substructures in dwarf elliptical galaxies?


Abstract (from CDS):

We have run high resolution N-body models simulating the encounter of a dwarf galaxy with a bright elliptical galaxy. The dwarf absorbs orbital angular momentum and shows counter-rotating features in the external regions of the galaxy. To explain the core-envelope kinematic decoupling observed in some dwarf galaxies in high-density environments requires nearly head-on collisions and very little dark matter bound to the dwarf. These kinematic structures appear under rather restrictive conditions. As a consequence, in a cluster like Virgo ∼1% of dwarf galaxies may present counter-rotation formed by harassment.

Abstract Copyright:

Journal keyword(s): galaxies: dwarf - galaxies: interactions - galaxies: kinematics and dynamics - galaxies: structure - methods: N-body simulations

Simbad objects: 6

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