AAS 195th Meeting, January 2000
Session 29. Gravitational Lensing, Relativistic Astrophysics and Gamma Ray Bursts
Oral, Wednesday, January 12, 2000, 2:00-3:30pm, Regency VII

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[29.03] Weak Lensing Mass Distributions of Nearby Clusters of Galaxies

M. Joffre (U. of Chicago), P. Fischer (U. of Mich.), J. Frieman (U. of Chicago/ Fermilab), D. Johnston (U. of Chicago), T. McKay (U. of Mich.), J. Mohr (U. of Chicago), B. Nichol (CMU), E. Sheldon (U. of Mich.), C. Cantaloupo (CMU), G. Griffin (CMU), J. Peterson (CMU), A.K. Romer (CMU)

We describe results from a weak lensing survey of a complete, X-ray luminosity-limited sample of 18 nearby (z<0.1) southern clusters scheduled for Sunyaev--Ze'dovich (SZ) observations by the Viper telescope at the South Pole. We have collected data and produced mass maps of 1/2 of the sample. Using multiple images, we have shown the reproducibility of weak lensing measurements of the mass distributions in such clusters. We are combining 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 \Omega0.

If you would like more information about this abstract, please follow the link to http://astro.uchicago.edu/home/web/joffre/weaklensing.html. This link was provided by the author. When you follow it, you will leave the Web site for this meeting; to return, you should use the Back comand on your browser.

The author(s) of this abstract have provided an email address for comments about the abstract: joffre@coltrane.uchicago.edu

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