SIMBAD references

We present a weak-lensing analysis of the Coma Cluster using the Sloan Digital Sky Survey Data Release 5. Complete imaging of an ∼200 deg² region is used to measure the tangential shear of this cluster. The shear is fit to a Navarro, Frenk, & White model, and we find a virial radius of r₂₀₀=1.99^+0.21_–0.22 h^–1 Mpc, which corresponds to a virial mass of M₂₀₀=1.88^+0.65_–0.56x10¹⁵ h^–1 M_☉. We additionally compare our weak-lensing measurement to the virial mass derived using dynamical techniques and find that they are in agreement. This is the lowest redshift, largest angle weak-lensing measurement of an individual cluster to date.