[78.05] A $K$-Selected Candidate Galaxy Cluster with $z \sim 0.9$ in the NOAO Deep Wide Field Survey

AAS 201st Meeting, January, 2003
Session 78. NOAO Survey Programs
Poster, Wednesday, January 8, 2003, 9:20am-6:30pm, Exhibit Hall AB

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[78.05U] A K-Selected Candidate Galaxy Cluster with z ~0.9 in the NOAO Deep Wide Field Survey

T. Dolch (Caltech), P. Eisenhardt, D. Stern (JPL/Caltech), A. Dey, B. Jannuzi, M. Brown (NOAO), G. Tiede (Florida)

Deep near-infrared imaging is an ideal tool to search for high-redshift galaxy clusters. We have examined a one square degree patch of sky from the NOAO Deep Wide Field Survey (NDWFS) in the constellation Bootes. We used K-band data taken with the ONIS camera on the KPNO 2.1m telescope and deep B, R, and I data from the MOSAIC camera on the KPNO 4m. Several candidate clusters were found, including one with a photometric redshift of z_{\rm phot} ~0.90. This candidate includes eight K < 18.5 galaxies with photometric redshifts between 0.8 and 1.0 in a 4 square arcmin region, representing an 8.4 sigma deviation from the average surface density of such sources. Five of these galaxies, falling within a 46 arcsec diameter region, have 17.3 < K < 18 and I - K ~4.

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

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