Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aspc..399....3k&link_type=abstract
Panoramic Views of Galaxy Formation and Evolution ASP Conference Series, Vol. 399, proceedings of the conference held 11-16 Dece
Astronomy and Astrophysics
Astronomy
Scientific paper
I review the progress in our systematic search for high-z Lymanα emitters (LAEs) with Subaru. Subaru has a vast panoramic field of view, which gives unique advantages of increasing the chance to discover the most distant galaxies, constructing a statistical sample on blank fields, and overcoming the large scale structure as well as potentially large cosmic variance in the reionization epoch. The large statistical sample of LAEs beyond z=6 explores the initial stages of the most fundamental observables in both star-formation history and structure formation process. The LAEs also provide valuable constraints on cosmic reionization. The observed accurate Lymanα luminosity function of LAEs at z=6.5 reveals an apparent deficit at least at the bright end compared to that observed at z=5.7. The Lymanα luminosity density was found to gradually decrease from z=5.7 to 7.0. These results may indicate a substantial transition in the intergalactic medium (IGM) ionizing state during these early epochs.
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