NOAO >   Observing Info >   Approved Programs >   2004A-0319

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Proposal Information for 2004A-0319


PI: Jiasheng Huang, Smithsonian Astrophysical Observatory, jhuang@cfa.harvard.edu
Address: OIR, 60 Garden Str., MS65, Cambridge, MA 02138, USA

CoI: Pauline Barmby, SAO
CoI: Steve Willner, SAO
CoI: Donglai Gong, MIT
CoI: Giovanni Fazio, SAO
CoI: Mike Pahre, SAO

Title: An Unbiased Study of Galaxies at z=3: IR photometry of Lyman Break Galaxies with SIRTF

Abstract: The Lyman Break technique has been a major breakthrough in effectively detecting galaxies at z>3. This method, however, is so strongly biased towards UV-bright galaxies that a fair census of galaxies at z=3 is impossible. With the successful launch of SIRTF, we will be able to detect galaxies at z=3 in their rest-frame near-infrared bands. A major SIRTF GTO project will conduct a deep survey in the mid and far IR. With its great sensitivity, this survey will detect galaxies to below L* at z=3. Here we propose to carry out a complementary LBG survey in the same region of sky. The LBG's will give a sample of galaxies known to be at high redshift. From these, we will calibrate the IR colors of such galaxies and use these colors to select additional galaxies at high redshift. The combined LBG/IR sample will give the best estimate yet for galaxy formation and large scale structure at z=3.


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NOAO >   Observing Info >   Approved Programs >   2004A-0319

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