AAS 205th Meeting, 9-13 January 2005
Session 147 Groups and Clusters of Galaxies
Poster, Thursday, January 13, 2005, 9:20am-4:00pm, Exhibit Hall

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[147.19] Shear-selected Clusters from the Deep Lens Survey

D. Wittman (UC Davis), I. Dell'Antonio (Brown University), V. Margoniner, J.A. Tyson (UC Davis), J.P. Hughes (Rutgers University), J. Cohen (Caltech), D. Norman (CTIO), DLS Team

We present preliminary results from the Deep Lens Survey (DLS) shear-selected cluster search. The DLS is a deep BVRz' weak lensing survey of 20 square degrees, which will produce a sample of ~ 100 shear-selected clusters. We base the lensing analysis on the R band images, which have strictly controlled image quality, and we use the other filters to derive photometric redshifts for ~ 3 million sources. We present mass maps of several 2 degree by 2 degree fields, yielding a preliminary sample of 18 clusters spanning the redshift range 0.2-0.7. For a few of these clusters, we present more detailed mass maps and tomographic lensing analyses.

Our followup focuses on the X-ray and optical properties of these clusters, which may reveal biases in existing X-ray and optically selected samples. Chandra and/or XMM X-ray observations are soon to be complete for the first fifteen clusters from the sample, and we present mass and X-ray maps of some individual clusters.

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© 2004. The American Astronomical Society.