NOAO >   Observing Info >   Approved Programs >   2010B-0257

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Proposal Information for 2010B-0257


PI: Karl Gebhardt, University of Texas, gebhardt@astro.utexas.edu
Address: Astronomy Department, 1 University Station, C1400, Austin, TX 78712, USA

CoI: Joshua Adams, University of Texas
CoI: Guillermo Blanc, University of Texas
CoI: Gary Hill, University of Texas
CoI: Niv Drory, MPE
CoI: Steven Finkelstein, Texas A&M Univeristy
CoI: Caryl Gronwall, Pennsylvania State University

Title: Rest-frame Optical Spectroscopy of Ly-alpha Emmitting Galaxies

Abstract: Lyman-alpha emitters (LAEs) in the early universe are quickly becoming one of the most important galaxy samples, as they probe the initial stages of galaxy formation. We propose to obtain H-alpha, H- beta, [OIII], and [NII] emission line fluxes of 6 LAEs at redshifts between 2.1 and 2.5 from NIR spectra using Gemini/NIFS. The physical nature of LAEs, including mass, age, metallicity, ISM, and dust, is poorly understood. Our unique sample is based on an extensive blind IFU spectroscopic survey in the GOODS-N, MUNICS, and COSMOS fields covering 170 square arcmin; it provides the essential base for follow-up H and K band spectroscopy, allowing us to select targets that have all relevant emission lines fall in between night sky lines. We have an aggressive campaign to provide a robust understanding of these important and elusive objects. The Gemini/NIFS observations focus on the brightest LAEs. All candidates are secure LAEs and have secure positions.


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



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