AAS 196th Meeting, June 2000
Session 7. Gravitational Lensing and Dark Matter
Display, Monday, June 5, 2000, 9:20am-6:30pm, Empire Hall South

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[7.01] Weak Lensing by Galaxies and Clusters in SDSS Commissioning Data

E. Sheldon, M. Centurion, P. Fischer (Mich.), J. Frieman (Chicago), B. Jain (JHU), M. Joffre, D. Johnston (Chicago), T. McKay, J. Racusin (Mich.), A. Stebbins (Fermi Lab), SDSS Collaboration

We present new results from several weak lensing analyses conducted with commissioning data from the Sloan Digital Sky Survey. We show that SDSS data can be used to measure the average mass and halo profile of galaxies accurately to radii approaching 1 h-1 Mpc. Preliminary analyses will be presented showing the dependence of lensing on galaxy environment and type. We also describe the first detection of weak lensing by clusters in SDSS data. We detect the lensing by clusters to a radius of 2.5 h-1 Mpc. These initial results demonstrate the power of weak lensing analyses of SDSS data, and we conclude with a discussion of prospects for the coming year.

The SDSS is a joint project of the University of Chicago, Fermilab, the Institute for Advanced Study, the Japan Participation Group, Johns Hopkins University, Max-Planck-Institute for Astronomy, Princeton University, United States Naval Observatory and the University of Washington. Funding has been provided by the Alfred P. Sloan Foundation, the member institutions, NASA, NSF, the U.S. DoE, and the Ministry of Education of Japan.

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

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