Journal Article

Dark matter halo structure in CDM hydrodynamical simulations

P. B. Tissera and R. Domínguez-Tenreiro

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 297, issue 1, pages 177-194
Published in print June 1998 | ISSN: 0035-8711
Published online June 1998 | e-ISSN: 1365-2966 | DOI:
Dark matter halo structure in CDM hydrodynamical simulations

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We have carried out a comparative analysis of the properties of dark matter haloes in N-body and hydrodynamical simulations. We analyse their density profiles, shapes and kinematical properties with the aim of assessing the effects that hydrodynamical processes might produce on the evolution of the dark matter component. The simulations performed allow us to reproduce dark matter haloes with high resolution, although the range of circular velocities is limited. We find that for haloes with circular velocities of [150–200] km s−1 at the virial radius, the presence of baryons affects the evolution of the dark matter component in the central region, modifying the density profiles, shapes and velocity dispersions. We also analyse the rotation velocity curves of disc-like structures and compare them with observational results.

Keywords: hydrodynamics; methods: numerical; galaxies: evolution; galaxies: formation; dark matter

Journal Article.  0 words. 

Subjects: Astronomy and Astrophysics

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