Photometric Selection of a Massive Galaxy Catalog with $z\geq0.55$
  We present the development of a photometrically selected massive galaxy
catalog, targeting Luminous Red Galaxies (LRGs) and massive blue galaxies at
redshifts $z\geq 0.55$. Massive galaxy candidates are selected using
infrared/optical color-color cuts, with optical data from Sloan Digital Sky
Survey (SDSS) and infrared data from "unWISE" forced photometry derived from
the Wide-field Infrared Survey Explorer (WISE). The selection method is based
on previously developed techniques to select LRGs with $z>0.5$, and is
optimized using receiver operating characteristic (ROC) curves. The catalog
contains 16,191,145 objects, selected over the full SDSS DR10 footprint. The
redshift distribution of the resulting catalog is estimated using spectroscopic
redshifts from the DEEP2 Galaxy Redshift Survey and photometric redshifts from
COSMOS. Restframe $U-B$ colors from DEEP2 are used to estimate LRG selection
efficiency. Using DEEP2, the resulting catalog has average redshift $z=0.65$,
with standard deviation $\sigma = 2.0$, and average restframe $U-B=1.0$, with
standard deviation $\sigma=0.27$. Using COSMOS, the resulting catalog has
average redshift $z=0.60$, with standard deviation $\sigma = 1.8$. We estimate
34% of the catalog to be blue galaxies with $z\geq0.55$. An estimated 9.6% of
selected objects are blue sources with redshift $z<0.55$. Stellar contamination
is estimated to be 1.8%.
