Dust attenuation and the stellar kinematical evidence for dark halos around elliptical galaxies

We present a set of dynamical models for elliptical galaxies, in which dust attenuation is included through a Monte Carlo technique. We find that interstellar dust affects the observed kinematics significantly, in the way that it mimics the presence of a dark halo. As a result, we are faced with a new mass-dust degeneracy. Taking dust attenuation into account in dynamical modelling procedures will hence reduce or may even eliminate the need for a dark matter halo at a few effective radii.