Gravitational Lensing Limits on Early-Type Galaxies
C. S. Kochanek, C. R. Keeton
Abstract
Gravitational lenses are a unique new constraint on the structure of galaxies. We review the evidence that most lenses are early-type galaxies, the optical properties of the lens galaxies, the evidence against constant M/L models, recent work on the axis ratios of the mass distribution, and the role stellar dynamics plays in gravitational lensing.
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