The Mass Of The Coma Cluster From Weak Lensing In The Sloan Digital Sky Survey

Details The Mass Of The Coma Cluster From Weak Lensing In The Sloan Digital Sky Survey The Mass Of The Coma Cluster From Weak Lensing In The Sloan Digital Sky Survey

2007-09-04

arxiv.org/abs/0709.0506v1

Astrophys.J.671:1466-1470,2007

Astronomy and Astrophysics

Astrophysics

Accepted to ApJ, 16 pages (preprint format), 3 figures

Scientific paper

10.1086/523101

We present a weak lensing analysis of the Coma Cluster using the Sloan Digital Sky Survey (SDSS) Data Release Five. Complete imaging of a ~ 200 square degree region is used to measure the tangential shear of this cluster. The shear is fit to an NFW model and we find a virial radius of r_{200}=1.99_{-0.22}^{+0.21}h^{-1}Mpc which corresponds to a virial mass of M_{200}=1.88_{-0.56}^{+0.65}\times10^{15}h^{-1}M_{\odot}. We additionally compare our weak lensing measurement to the virial mass derived using dynamical techniques, and find they are in agreement. This is the lowest redshift, largest angle weak lensing measurement of an individual cluster to date.

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