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[91.08] The Mass of Damped Lyman Alpha Systems at z~3: Cross-correlation with Lyman Break Galaxies

J. Cooke, A. M. Wolfe (University of California, San Diego), J. X. Prochaska (University of California, Santa Cruz), E. Gawiser (Yale University, Universidad de Chile)

We present results from a multiple field survey for Lyman break galaxies (LBGs) associated with damped Lyman alpha systems (DLAs) at z~3. We investigate the clustering properties of LBGs with DLAs to measure the mass of typical z~3 DLAs in the context of CDM cosmology.

We obtained deep u'BVRI imaging of 9 quasar fields containing 10 known DLAs. LBG candidates that met theoretical color criteria were photometrically selected from these images to a spectroscopic magnitude limit of R < 25.5. Follow-up multislit spectroscopy of the LBG candidates has yielded ~300 z~3 redshifts. We utilize these spectra to assess the efficiency of our photometric selection technique and to determine the DLA-LBG cross-correlation function.

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Bulletin of the American Astronomical Society, 36 #2
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