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2005MNRAS.362...95M - Mon. Not. R. Astron. Soc., 362, 95-109 (2005/September-1)
Dark matter in elliptical galaxies - I. Is the total mass density profile of the NFW form or even steeper ?
MAMON G.A. and LOKAS E.L.
Abstract (from CDS):
The very low total mass and velocity dispersion produced within Reby an NFW-like total mass profile suggests that the stellar component should dominate the dark matter component out to at least Re. It should then be difficult to kinematically constrain the inner slope of the DP of ellipticals. The high-concentration parameters deduced from X-ray observations appear to be a consequence of fitting an NFW model to the total mass DP made up of a stellar component that dominates inside and a dark matter component that dominates outwards.
An appendix gives the virial mass dependence of the concentration parameter, central density and total mass of the Navarro et al. model. In a second appendix are given single integral expressions for the velocity dispersions averaged along the line of sight, in circular apertures and in thin slits, for general luminosity density and mass distributions, with isotropic orbits.
Abstract Copyright: 2005 RAS
Journal keyword(s): methods: analytical - galaxies: elliptical and lenticular, cD - galaxies: haloes - galaxies: kinematics and dynamics - galaxies: structure
CDS comments: Erratum vol. 370, p. 1581 (2006)
Simbad objects: 11
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