(Proposal ID) S15B-036

(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. We propose to conduct "GANBA-Subaru" project (Galaxy Anatomy with Narrow-
Band AO-imaging with Subaru), which obtain narrow-band (NB) and K-band images 
of star forming galaxies at z~2 using IRCS+AO188. AO188 enables us to achieve 
the highest spatial resolution (<0".20) in both NB and K bands, which is 
comparable to the HST resolution in near-infrared. 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 (10^8M_sun<M_* <10^{12}M_sun) and SFR 
compared to the previous IFU studies of Halpha emitters which is biased toward 
massive galaxies (M_*>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 resubmission of the previously accepted programs 
(S13B-059, S14B-032) which were almost wiped out by bad weather.}