Astronomy and Astrophysics – Astrophysics
Scientific paper
2002-12-05
Astronomy and Astrophysics
Astrophysics
10 pages, 4 figures, in "Computational astrophysics in Italy: methods and tools'', Proceedings of the workshop, Bologna, July
Scientific paper
Pure N-body high-resolution re-simulations of 13 massive dark matter halos in a Lambda-CDM cosmology are presented. The resulting sample is used to investigate the physical origin of the Fundamental Plane, ``Faber-Jackson'', and ``Kormendy'' relations observed for nearby galaxy clusters. In particular, we focus on the role of dissipationless hierarchical merging in establishing or modifying these relations. Contrarily to what found in the case of the Faber-Jackson and Kormendy relations for galaxies (see Londrillo, Nipoti and Ciotti, this conference), dissipationless merging on cluster scales produces scaling relations remarkably similar to the observed ones. This suggests that gas dissipation plays a minor role in the formation of galaxy clusters, and the hierarchical merger scenario is not at odd with the observed regularity of these systems.
Cappi Alberto
Ciotti Luca
Lanzoni Barbara
No associations
LandOfFree
High-resolution re-simulations of massive DM halos and the Fundamental Plane of galaxy clusters does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with High-resolution re-simulations of massive DM halos and the Fundamental Plane of galaxy clusters, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High-resolution re-simulations of massive DM halos and the Fundamental Plane of galaxy clusters will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-702638