AAS 207th Meeting, 8-12 January 2006
Session 22 Evolution of Galaxies, Galaxies Surveys I
Poster, Monday, 9:20am-7:00pm, January 9, 2006, Exhibit Hall

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[22.12] A Visible Wavelength Search for Lyman-Break Galaxies at z~3

P. H. Sell (University of Toledo), M. L. N. Ashby, J. S. Huang, Z. Wang (Smithsonian Astrophysical Observatory), S. Miyazaki (National Astronomical Observatory of Japan)

To better understand galaxy evolution at high redshifts, we present a candidate sample of z~3 galaxies assembled using the Lyman-break technique from one 35.5'x35.5' field in the Extended Groth Strip, which is at a high galactic latitude in the constellation Bootes. We use a method of photometric preselection known as the dropout technique (Steidel et. al 1996), in which we categorize our sources using rest-UV colors observed at visible wavelengths. We use U-g' and g'-R colors (Steidel et. al 2003) to identify the candidate Lyman-break galaxies at a high selection efficiency. At z~3, we identify 351 candidates undetected in U and 560 candidates detected in U. We plan to confirm our Lyman-break galaxy candidates with spectroscopic follow-up in the near future. This research was supported by the National Science Foundation's Research Experiences for Undergraduates Program at the Harvard-Smithsonian Center for Astrophysics in Cambridge, MA.

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