Weak Lensing Mass Maps of Very Nearby Clusters of Galaxies

Details Weak Lensing Mass Maps of Very Nearby Clusters of Galaxies Weak Lensing Mass Maps of Very Nearby Clusters of Galaxies

Apr 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000aps..aprv16003j&link_type=abstract

American Physical Society, April Meeting, April 29-May 2, 2000 Long Beach, CA, abstract #V16.003

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We present results from a weak lensing survey of an X-ray luminosity-limited sample of 18 nearby (z<0.1) southern clusters scheduled for Sunyaev--Zel'dovich (SZ) observations by the Viper telescope at the South Pole. We have observed and produced mass maps of 1/2 of the sample. We have shown the reproducibility of weak lensing measurements of the mass distributions in such clusters with multiple observations. We have combined these mass distributions with X-ray data, optical redshifts, SZ observations, and other high-quality ancillary data to study the baryon fractions, morphologies, and form robust measurements of the mass of these clusters. These are first steps in determining the local cluster mass function, a fundamental goal of cosmology, used to constrain the cosmological model and Ω_0.

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