Title: A Wide-Field Search for Population III Stars 
       in High-Redshift Galaxies in the Subaru Deep Field
Author: Tohru Nagao
Abstract:

In this contribution we present our new photometric search 
for high-z galaxies hosting Population III (PopIII) stars 
based on deep narrow-band and intermediate-band imaging 
observations, by using Supreme-Cam on the Subaru Telescope. 
We searched for galaxies which emit strongly both in LyA 
and in He II ('dual emitters') that are promising candidates 
for PopIII-hosting galaxies, at 4<z<5. Although we found 10 
dual emitters, most of them turn out to be [OII]-[OIII] dual 
emitters or H_beta-H_alpha dual emitters at z<1, as inferred 
from their broad-band colors and from the ratio of the 
equivalent widths. No convincing candidate of LyA-He II dual 
emitter with SFR_PopIII > 2 M_sun/yr was found. This result 
disfavors low feedback models for PopIII star clusters. 
This new selection method to search for PopIII-hosting 
galaxies should be useful in future surveys for 
PopIII-hosting galaxies at high redshift.