S19A0101

The z=3.09 SSA22 proto-cluster is one of the densest field at z>2 and therefore provides an unique laboratory to understand how galaxies and supermassive black holes (SMBHs) form and evolve in such extreme environment. Recently we have observed a contiguous 20 arcmin2 region at the center of the proto-cluster using ALMA at 1.1 mm. This “ALMA Deep Field in SSA22 (ADF22)” is one of the deepest and widest ALMA survey to date , and only one in remarkable biased field in the early universe. The ALMA map leads us to the discovery of incredibly elevated star-formation and dust production at the proto-cluster core. Here we propose ultra-deep Ks-band imaging with MOIRCS, which is designed to cover the entire ALMA map in order to reveal the stellar components of dusty star-forming galaxies and various proto-cluster galaxies including low-mass ones, comprehensively. Our immediate objectives are (i) to map stellar components of SMGs and refer their formation process in the proto-cluster, and (ii) to uncover environmental dependence on stellar and dust mass assembly. This observation will be also a key data for upcoming JWST observations.


This document was translated from LATEX by HEVEA.