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Strong Gravitational Lensing: Bright Galaxies & Lost Dark-Matter

Published online by Cambridge University Press:  01 June 2007

L. V. E. Koopmans
L. V. E. Koopmans*
Affiliation:
Kapteyn Astronomical Institute, University of Groningen, P.O.Box 800, 9700 AV Groningen, The Netherlands
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Abstract

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Gravitational lensing and stellar dynamics provide two complementary methods to probe the smooth and clumpy stellar and dark-matter mass distribution in early-type galaxies, currently already over a range of two orders of magnitude in virial mass, more than ten orders of magnidude in dynamic mass range in each galaxy (i.e. from stars, CDM substructure to massive dark-matter halos), over 0–1 in redshift, and a range of 0–100 effective radii. This makes their unification a powerful new tool in the study of the formation, structure and evolution of these massive systems. I review recent results that we obtained, based on gravitational lens systems from the Sloan Lens ACS Survey (SLACS), and outline some ongoing and future work.

Keywords

gravitational lensing – Galaxy: kinematics and dynamics

Information

Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 3 , Symposium S244: Dark Galaxies and Lost Baryons , June 2007 , pp. 196 - 205
Copyright
Copyright © International Astronomical Union 2008

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