NOAO >   Observing Info >   Approved Programs >   2011B-0366

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Proposal Information for 2011B-0366


PI: Fuyan Bian, University of Arizona, fbian@as.arizona.edu
Address: Steward Observatory, 933 N Cherry Ave., TUCSON, AZ, USA

CoI: Xiaohui Fan, University of Arizona
CoI: Linhua Jiang, University of Arizona
CoI: Ian McGreer, University of Arizona

Title: Rest-frame UV Spectra of the most UV luminous Lyman Break Galaxies at z~3

Abstract: We propose to carry out long-slit deep optical (rest frame ultraviolet (UV)) spectroscopic observations of three most UV luminous Lyman break galaxies (LBGs) at z~3 with GMOS-S. We have carried out wide-field multicolor surveys of LBGs covering >300 deg^2, increasing the survey volume by 2 orders of magnitude larger than previous surveys. Our initial observations have revealed eight extremely UV luminous galaxies with r~21-22.3, more than 2 magnitudes brighter than typical LBGs. We will observe three faintest galaxies in this sample with r~22. At L ~ 7.5 L^*, they represent the rarest and most intensive star forming systems in the early Universe. With the deep spectroscopy, we will investigate the nature of these galaxy systems, which was proposed to be comprised of multiple galaxies by previous optical spectroscopic observations. Combining previous faint LBG sample, the proposed observations will build up a perfect sample to provide enough dynamic range of star formation rate (SFR) to study the correlation between galactic-scale outflows velocity and SFR in LBGs at z~2-3 for the first time.


National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360



NOAO >   Observing Info >   Approved Programs >   2011B-0366

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