An observational pursuit for Pop III stars in a Lyα emitter at z>6 through He II emission

Details An observational pursuit for Pop III stars in a Lyα emitter at z>6 through He II emission An observational pursuit for Pop III stars in a Lyα emitter at z>6 through He II emission

Aug 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007hia....14..255n&link_type=abstract

Highlights of Astronomy, Volume 14, p. 255-255

Astronomy and Astrophysics

Astronomy

Early Universe, Galaxies: Evolution, Galaxies: Starburst, Stars: Early

Scientific paper

We report our on-going observational project to search for population III (Pop III) stars in high-z galaxies. We searched Lyα emitters (LAEs) with a large equivalent width (EW), by our new selection technique ‘NB921-depressed i′-dropout selection’. We found eight photometric candidates and spectroscopically identified five LAEs with EW0(Lyα) > 100 Å. We then carried out a very deep near-infrared spectroscopy for a LAE among the above five, to search for the redshifted He iiλ1640 emission from Pop III stars in the galaxy, but obtained only an upper limit.

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