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The dark matter halos of spheroidal galaxies and clusters of galaxies
T. Treu, L. V. E. Koopmans, D. J. Sand +2
We describe the first results from two observational projects aimed at measuring the amount and spatial distribution of dark matter in distant early-type galaxies (E/S0s) and clust…
The Lenses Structure & Dynamics Survey: The internal structure and evolution of E/S0 galaxies and the determination of H_0 from time-delay systems
L. V. E. Koopmans, T. Treu
The Lenses Structure & Dynamics (LSD) Survey aims at studying the internal structure of luminous and dark matter - as well as their evolution - of field early-type (E/SO) galaxies…
Cool White Dwarfs Revisited -- New Spectroscopy and Photometry
Samir Salim, R. Michael Rich, Brad M. Hansen +3
In this paper we present new and improved data on 38 cool white dwarfs identified by Oppenheimer et al. 2001 (OHDHS) as candidate dark halo objects. Using the high-res spectra obta…
The signature of substructure on gravitational lensing in the LCDM cosmological model
M. Bradac, P. Schneider, M. Lombardi +3
We present a study of the lens properties of quadruply imaged systems, lensed by numerically simulated galaxies. We investigate a simulated elliptical and disc galaxy drawn from hi…