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Using Weak-Lensing Dilution to Measure Light Properties of A1689

Broadhurst, Tom; Coe, Dan; Umetsu, Keiichi +1 more

Weak-lensing induced by clusters of galaxies can probe the total mass distribution out to the virial radius of the cluster, regardless of the nature of the mass or its dynamical state. To make a robust analysis, the cluster and background galaxy populations need to be separated. The E/S0 sequence of a cluster defines a boundary redward of which a …