Title: Panoramic Views of Cluster Evolution with Subaru
Author(s): Tadayuki Kodama, Yusei Koyama, Masayuki Tanaka, Masao Hayashi,
           Fumiaki Nakata, Ichi Tanaka, Masaru Kajisawa, et al.
Abstract: 
We will present overviews of the two cluster projects that we have been
conducting on Subaru, namely PISCES for 0.4<z<1.4 and HzRG for 2<z<5.
From these projects, a consistent picture has been emerging that
the star forming activity is once enhanced and then truncated in
galaxy groups in the outskirts of clusters during the course of cluster
assembly at z<1.  However, such activity is shifted into cluster cores
as we go further back in time to z~1.5.  At z=2-2.5, we begin to enter
the epoch where massive galaxies are actually forming in the cluster core.
And by z~3, we eventually go beyond the major epoch of massive galaxy
formation.
It is likely that the environmetal dependence of star forming activity
is at least partly due to the external environmental effect such as
galaxy-galaxy interaction in medium density regions at z<1, while 
the intrinsic effect of galaxy formation bias overtakes the external
effect at higher redshifts, resulting to a large star formation
activity in the cluster center.
Togerther with the mass dependence of galaxy properties, which is
also clearly reproduced in our data, we will sketch the propagation
of galaxy formation and truncation from massive galaxies in high density
regions to less massive galaxies in low density regions.