Using a combination of near-infrared and optical photometry , along with multi-object spectroscopy , we have confirmed the existence of a high-redshift cluster of galxies at z = 0.96 .
The cluster was found using a wide-angle tailed radio source selected from the VLA FIRST survey as a cluster signpost .
These types of radio sources are often found in clusters , and are thought to attain their C-shaped morphologies from the relative motion between the radio source host galaxy and the intracluster medium .
We present optical/near-infrared color-magnitude diagrams which show a concentration of cluster galaxies in color space .
We also include spectroscopic results obtained from the Keck II LRIS .
Ten galaxies are confirmed at the cluster redshift , with a line-of-sight velocity dispersion of \sigma _ { \| } = 530 ^ { +190 } _ { -90 } km s ^ { -1 } , typical of an Abell richness class 0 cluster .
Using data from the ROSAT public archive , we limit the X-ray luminosity for the cluster to L _ { X,bol } \lesssim 3 \times 10 ^ { 44 } erg s ^ { -1 } , consistent with the value expected from the L _ { X } - \sigma relation .