High-resolution re-simulations of massive DM halos and the Fundamental Plane of galaxy clusters

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dc.creatorLanzoni, B.
dc.creatorCappi, A.
dc.creatorCiotti, L.
dc.date2002-12-05
dc.date.accessioned2026-07-07T02:06:43Z
dc.date.available2026-07-07T02:06:43Z
dc.descriptionPure 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.
dc.description10 pages, 4 figures, in "Computational astrophysics in Italy: methods and tools'', Proceedings of the workshop, Bologna, July 4-5, 2002, R. Capuzzo Dolcetta ed., SAIt Proc. on line, in press
dc.identifierhttps://arxiv.org/abs/astro-ph/0212131
dc.identifierhttp://arxiv.org/abs/astro-ph/0212131
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/5458
dc.subjectAstrophysics
dc.titleHigh-resolution re-simulations of massive DM halos and the Fundamental Plane of galaxy clusters
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