SIMBAD references

2007MNRAS.376..997J - Mon. Not. R. Astron. Soc., 376, 997-1020 (2007/April-2)

2D kinematics of simulated disc merger remnants.


Abstract (from CDS):

We present a 2D kinematic analysis for a sample of simulated binary disc merger remnants with mass ratios 1:1 and 3:1. For the progenitor discs we used pure stellar models as well as models with 10 per cent of their mass in gas. A multitude of phenomena also observed in real galaxies are found in the simulations. These include misaligned rotation, embedded discs, gas rings, counter-rotating cores (CRCs) and kinematic misaligned discs. Using the 2D maps we illustrate projection effects and the change in properties of a merger remnant when gas is included in the merger. We find that kinematic peculiar subsystems are preferably formed in equal-mass mergers. Equal-mass collisionless remnants can show almost no rotation, regular rotation or strong kinematic misalignment. The inclusion of gas makes the remnants appear more round (1:1) and axisymmetric (3:1). CRCs are almost exclusively formed in equal-mass mergers with a dissipational component. 3:1 remnants show a much more regular structure. We quantify these properties by applying the kinemetric methods recently developed by Krajnovi{cacute} et al. This work will help to understand observations of elliptical galaxies with integral field spectrographs, like SAURON.

Abstract Copyright: 2007 The Authors. Journal compilation © 2007 RAS

Journal keyword(s): methods: {em N}-body simulations - galaxies: elliptical and lenticular, cD - galaxies: evolution - galaxies: formation - galaxies: fundamental parameters - galaxies: kinematics and dynamics

Simbad objects: 23

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