Journal
ASTROPHYSICAL JOURNAL
Volume 621, Issue 2, Pages 596-614Publisher
IOP PUBLISHING LTD
DOI: 10.1086/427685
Keywords
galaxies : formation; galaxies : high-redshift; galaxies : photometry; quasars : absorption lines
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We present a survey of z similar to 3 Lyman break galaxies ( LBGs) associated with damped Ly alpha systems ( DLAs) with the primary purpose of determining the DLA- LBG cross- correlation. This paper describes the acquisition and analysis of imaging and spectroscopic data of nine quasar fields having 11 known z similar to 3 DLAs covering an area of 465 arcmin(2). Using deep u'BVRI images, 796 LBG candidates up to an apparent R-AB magnitude of 25.5 were photometrically selected from 17,343 sources detected in the field. Spectroscopic observations of 529 LBG candidates using the Keck Low Resolution Imaging Spectrometer yielded 339 redshifts. We have conservatively identified 211 z > 2 objects with (z) = 3.02 +/- 0.32. We discuss our method of z similar to 3 LBG identification and present a model of the u'BVRI photometric selection function. We use the 339 spectra to evaluate our u'BVRI z similar to 3 Lyman break photometric selection technique.
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