(Proposal ID) S16B-088

(PI) Minowa, Yosuke

(Proposal Title)
GANBA-Subaru: Dissecting star-forming activities in field galaxies at z~2

(Abstract)
The main purpose of this proposal is to shed new light on the histories of 
galaxy assembly by obtaining spatially-resolved morphologies and star 
formation activities within galaxies at their rapid evolution phase around 
z~2. To do this, we propose to obtain narrow-band (NB) and K-band images of 
star-forming galaxies at z~2 using IRCS+AO188, which enables us to achieve 
the highest spatial resolution (<0".20) in both NB and K bands. Our targets 
are mainly drawn from the unique samples of z~2 Halpha emitters discovered by 
our previous seeing-limited NB imaging surveys with MOIRCS. Our sample 
galaxies span a wider range in the stellar-mass (10^9-10^{12}M_sun) and SFR 
compared to the previous IFU studies of Halpha emitters which is biased toward 
massive galaxies (>10^{10}M_sun). It allows us for the first time to study 
internal structure of star-forming galaxies depending on the location in the 
SFR-M_* diagram and its environmental dependence if compared to the galaxies 
in protoclusters. {This is a continuation of the previously accepted programs, 
which were almost wiped out by bad weather. In this proposal, we are going to 
complete the observations of the best 27 targets among our sample of z~2 field 
galaxies.}