A Universal density profile for dark and luminous matter

  title={A Universal density profile for dark and luminous matter},
  author={David Merritt and Julio F. Navarro and Aaron D Ludlow and Adrian Jenkins},
  journal={The Astrophysical Journal},
We explore similarities in the luminosity distribution of early-type galaxies and the mass profiles of ΛCDM halos. The spatial structure of these systems may be accurately described by a simple law in which the logarithmic slope of the density varies as a power of the radius: the Sersic law. We show that this law provides a significantly better fit to a set of high-resolution ΛCDM halos than a three-parameter generalization of the Navarro-Frenk-White profile. We discuss possible reasons why the… 

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