We present spectroscopic confirmation of a z=0.99 galaxy cluster discovered using data from the Wide-field Infrared Survey Explorer (WISE). This is the first z~1 cluster candidate from the Massive Distant Clusters of WISE Survey (MaDCoWS) to be confirmed. It was selected as an overdensity of probable z>~1 sources using a combination of WISE and SDSS-DR8 photometric catalogs. Deeper follow-up imaging data from Subaru and WIYN reveal the cluster to be a rich system of galaxies, and multi-object spectroscopic observations from Keck confirm five cluster members at z=0.99. The detection and confirmation of this cluster represents a first step towards constructing a uniformly-selected sample of distant, high-mass galaxy clusters over the full extragalactic sky using WISE data.
@article{arxiv.1205.7092,
title = {The Massive Distant Clusters of WISE Survey: The First Distant Galaxy Cluster Discovered by WISE},
author = {Daniel P. Gettings and Anthony H. Gonzalez and S. Adam Stanford and Peter R. M. Eisenhardt and Mark Brodwin and Conor Mancone and Daniel Stern and Gregory R. Zeimann and Frank J. Masci and Casey Papovich and Ichi Tanaka and Edward L. Wright},
journal= {arXiv preprint arXiv:1205.7092},
year = {2015}
}