(Proposal ID) S11A-083

(PI) Lin, Yen-Ting

(Proposal Title)
A Suprime View of Clusters in Bootes

(Abstract)
The 9 deg^2 NOAO DeepWide-Field Survey Bootes field, one of the largest 
contiguous areas with extensive multiwavelength coverage, contains one of the 
best sample of z < 1.5 galaxy clusters for the study of cluster evolution. We 
propose to measure masses for the known 200 0.2 < z < 1.2 clusters in Bootes 
using weak gravitational lensing, and investigate the evolution of their 
galaxies by surveying the whole field with SuprimeCam in the z'-band to 24.3 
mag (10sigma, AB) in 3 nights. By stacking lensing signal from ensembles of 
clusters and groups, we will measure the halo mass to ~ 30%; this will allow 
us to study galaxy evolution in clusters in a new and physically motivated 
way, namely to quantify the stellar mass build up in clusters that are 
believed to form an evolutionary sequence. The z '-band data further allows us 
to put strong constraints on the amplitude of the matter power spectrum and 
the dark energy equation of state using the evolution of the cluster mass 
function, as well as on the shape and evolution of quasar luminosity function 
at z > 5 and the role of quasars in reionization. We will maximize the science 
returns of the Subaru/SuprimeCam data by publicly releasing our source catalog 
and reduced images.