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Observations of High-Redshift X-Ray Selected Clusters with the Sunyaev-Zel'dovich ArrayWe report measurements of the Sunyaev-Zel'dovich (SZ) effect in three highredshift (0.89 less than or equal to z less than or equal to 1.03), X-ray selected galaxy clusters. The observations were obtained at 30 GHz during the commissioning period of a new, eight-element interferometer - the Sunyaev-Zel dovich Array (SZA) - built for dedicated SZ effect observations. The SZA observations are sensitive to angular scales larger than those subtended by the virial radii of the clusters. Assuming isothermality and hydrostatic equilibrium for the intracluster medium, and gas-mass fractions consistent with those for clusters at moderate redshift, we calculate electron temperatures, gas masses, and total cluster masses from the SZ data. The SZ-derived masses, integrated approximately to the virial radii, are 1.9(sup +0.5)(sub -0.4) x 10(sup 14) solar mass for ClJ1415.1+3612, 3.4 (sup +0.6)(sup -0.5) x 10(sup 14) solar mass for ClJ1429.0+4241 and 7.2(sup +1.3)(sub -0.9) x 10(sup 14) solar mass for ClJ1226.9+3332. The SZ-derived quantities are in good agreement with the cluster properties derived from X-ray measurements.
Document ID
20070002001
Acquisition Source
Marshall Space Flight Center
Document Type
Reprint (Version printed in journal)
Authors
Muchovej, Stephen
(Columbia Univ. New York, NY, United States)
Carlstrom, John E.
(Chicago Univ. Chicago, IL, United States)
Cartwright, John
(Chicago Univ. Chicago, IL, United States)
Greer, Christopher
(Chicago Univ. Chicago, IL, United States)
Hawkins, David
(Owens Valley Radio Observatory Big Pine, CA, United States)
Hennessy, Ryan
(Chicago Univ. Chicago, IL, United States)
Joy, Marshall
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Lamb, James W.
(Owens Valley Radio Observatory Big Pine, CA, United States)
Leitch, Erik M.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Loh, Michael
(Chicago Univ. Chicago, IL, United States)
Miller, Amber D.
(Columbia Univ. New York, NY, United States)
Mroczkowski, Tony
(Columbia Univ. New York, NY, United States)
Pryke, Clem
(Chicago Univ. Chicago, IL, United States)
Reddall, Ben
(Chicago Univ. Chicago, IL, United States)
Runyan, Marcus
(Chicago Univ. Chicago, IL, United States)
Sharp, Matthew
(Chicago Univ. Chicago, IL, United States)
Woody, David
(Owens Valley Radio Observatory Big Pine, CA, United States)
Date Acquired
August 24, 2013
Publication Date
January 1, 2006
Subject Category
Astrophysics
Distribution Limits
Public
Copyright
Other

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