First lensing measurements of SZ-discovered clusters

Details First lensing measurements of SZ-discovered clusters First lensing measurements of SZ-discovered clusters

2009-03-25

arxiv.org/abs/0903.4410v3

MNRAS Lett.399:84, 2009

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

Minor changes to match accepted version, 5 pages, 3 figures

Scientific paper

We present the first lensing mass measurements of Sunyaev-Zel'dovich (SZ) selected clusters. Using optical imaging from the Southern Cosmology Survey (SCS), we present weak lensing masses for three clusters selected by their SZ emission in the South Pole Telescope survey (SPT). We confirm that the SZ selection procedure is successful in detecting mass concentrations. We also study the weak lensing signals from 38 optically-selected clusters in ~8 square degrees of the SCS survey. We fit Navarro, Frenk and White (NFW) profiles and find that the SZ clusters have amongst the largest masses, as high as 5x10^14 Msun. Using the best fit masses for all the clusters, we analytically calculate the expected SZ integrated Y parameter, which we find to be consistent with the SPT observations.

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