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Weak Homology of Bright Elliptical Galaxies | Giuseppe Bertin
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21 Feb 2003 | Subject: | astro-ph | Affiliation: | Universita’ di Milano, Dipartimento di Fisica | Abstract: | Studies of the Fundamental Plane of early-type galaxies, from small to intermediate redshifts, are often carried out under the guiding principle that the Fundamental Plane reflects the existence of an underlying mass-luminosity relation for such galaxies, in a scenario where elliptical galaxies are homologous systems in dynamical equilibrium. Here I will re-examine the issue of whether empirical evidence supports the view that significant systematic deviations from strict homology occur in the structure and dynamics of bright elliptical galaxies. In addition, I will discuss possible mechanisms of dynamical evolution for these systems, in the light of some classical thermodynamical arguments and of recent N-body simulations for stellar systems under the influence of weak collisionality. | Source: | arXiv, astro-ph/0302456 | Services: | Forum | Review | PDF | Favorites |
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