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Detailed kinematics and morphological features in tidally heated disks

Published online by Cambridge University Press:  08 November 2005

C. Mastropietro ,
B. Moore ,
L. Mayer ,
V. P. Debattista ,
R. Piffaretti  and
J. Stadel
C. Mastropietro
Affiliation:
Institute for Theoretical Physics, University of Zürich, CH-8057 Zürich, Switzerland
B. Moore
Affiliation:
Institute for Theoretical Physics, University of Zürich, CH-8057 Zürich, Switzerland
L. Mayer
Affiliation:
Institute for Theoretical Physics, University of Zürich, CH-8057 Zürich, Switzerland
V. P. Debattista
Affiliation:
Astronomy Dept., University of Washington Seattle WA 98195-1580 Institut für Astronomie, ETH Zürich, CH-8093 Zürich, Switzerland
R. Piffaretti
Affiliation:
Institute for Theoretical Physics, University of Zürich, CH-8057 Zürich, Switzerland Institut für Astrophysik, Leopold-Franzens Universität Innsbruck, A-6020 Innsbruck, Austria
J. Stadel
Affiliation:
Institute for Theoretical Physics, University of Zürich, CH-8057 Zürich, Switzerland
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Abstract

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The recent discovery of hidden non-axysimmetric and disk-like structures in bright Virgo dwarf elliptical and lenticular galaxies (dE/dSph/dS0) indicates that they may have late-type progenitors. Using N-body simulations we follow the evolution of disk galaxies within a $\Lambda\textrm{CDM}$ cluster simulated with $10^7$ particles, where the hierarchical growth and galaxy harassment are modeled self-consistently. Most of the galaxies undergo significant morphological transformation, even at the outskirts of the cluster, and move through the Hubble sequence from late type disks to dwarf spheroidals. The time evolution of the simulated galaxies is compared with unsharp-masked images obtained from VLT data and the projected kinematics of our models with the latest high resolution spectroscopic studies from the Keck and Palomar telescopes.

Keywords

methods: N-body simulations – galaxies: clusters: general – galaxies: evolution
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 1 , Colloquium C198: Near-Field Cosmology with Dwarf Elliptical Galaxies , March 2005 , pp. 244 - 248
Copyright
© 2005 International Astronomical Union