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M. Joy, S. K. Patel (NASA/MSFC), J. Carlstrom, G. Holder, E. Reese (U. Chicago), L. Grego (CfA-SAO), W. Holzapfel (UC Berkeley), J. P. Hughes (Rutgers U.)
We present interferometric measurements of the Sunyaev-Zel'dovich Effect (SZE) in MS1137+66, a distant galaxy cluster at a redshift of 0.78. The data were obtained in 1997 and 1998 at the Berkeley-Illinois-Maryland millimeter array using sensitive 28.5 GHz receivers optimized for imaging of the SZE, with a total on-source integration time of 87.8 hours. We discuss constraints derived from spherical \beta model fits to the SZE data, place an upper limit on the strength of any possible radio point sources in the field, and compare the results with the x-ray data published by Donahue et al.\ in 1999.