We present measurements of the stellar mass fractions ( f _ { \star } ) for a sample of high-redshift ( 0.93 \leq z \leq 1.32 ) infrared-selected galaxy clusters from the Massive and Distant Clusters of WISE Survey ( \madcows ) and compare them to the stellar mass fractions of Sunyaev-Zel ’ dovich ( SZ ) effect-selected clusters in a similar mass and redshift range from the South Pole Telescope ( SPT ) -SZ Survey .
We do not find a significant difference in mean f _ { \star } between the two selection methods , though we do find an unexpectedly large range in f _ { \star } for the SZ-selected clusters .
In addition , we measure the luminosity function of the \madcows clusters and find m ^ { * } = 19.41 \pm 0.07 , similar to other studies of clusters at or near our redshift range .
Finally , we present SZ detections and masses for seven \madcows clusters and new spectroscopic redshifts for five \madcows clusters .
One of these new clusters , MOO J1521+0452 at z = 1.31 , is the most distant \madcows cluster confirmed to date .