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The Faint End of the Galaxy Luminosity Function In Moderate Redshift Clusters
Gillian Wilson, Ian Smail, Richard S. Ellis +1
We present deep two-colour photometry of two rich clusters at z=0.18, A665 and A1689. We use these data to construct number counts as a function of magnitude in the two fields. By…
Constraining Omega using weak gravitational lensing by clusters
Gillian Wilson, Shaun Cole, Carlos S. Frenk
The morphology of galaxy clusters reflects the epoch at which they formed and hence depends on the value of the mean cosmological density, Omega. Recent studies have shown that the…
Cluster mass reconstruction from weak gravitational lensing
Gillian Wilson, Shaun Cole, Carlos S. Frenk
Kaiser & Squires have proposed a technique for mapping the dark matter in galaxy clusters using the coherent weak distortion of background galaxy images caused by gravitational len…