The Two-Component Virial Theorem and the Physical Properties of Stellar Systems
Astrophysics
2009-10-31 v2
Abstract
Motivated by present indirect evidences that galaxies are surrounded by dark matter halos, we investigate whether their physical properties can be described by a formulation of the virial theorem which explicitly takes into account the gravitational potential term representing the interaction of the dark halo with the barionic or luminous component. Our analysis shows that the application of such a ``two-component virial theorem'' not only accounts for the scaling relations displayed, in particular, by elliptical galaxies, but also for the observed properties of all virialized stellar systems, ranging from globular clusters to galaxy clusters.
Cite
@article{arxiv.astro-ph/9910541,
title = {The Two-Component Virial Theorem and the Physical Properties of Stellar Systems},
author = {Christine C. Dantas and Andre L. B. Ribeiro and Hugo V. Capelato and Reinaldo R. de Carvalho},
journal= {arXiv preprint arXiv:astro-ph/9910541},
year = {2009}
}
Comments
13 pages, 2 figures, LaTeX, corrected few typos. This version matches the published version