Cross Correlation between Ly-break Galaxies and Damped Lyα Systems in Cosmological SPH Simulations

Details Cross Correlation between Ly-break Galaxies and Damped Lyα Systems in Cosmological SPH Simulations Cross Correlation between Ly-break Galaxies and Damped Lyα Systems in Cosmological SPH Simulations

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...211.5503l&link_type=abstract

American Astronomical Society, AAS Meeting #211, #55.03; Bulletin of the American Astronomical Society, Vol. 39, p.826

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We calculate the cross-correlation function (CCF) between damped Ly-α systems (DLAs) and Lyman break galaxies (LBGs) using cosmological hydrodynamic simulations at z=3. We compute the CCF in two different methods. First, we assume that there is one DLA in each dark matter halo. Second approach is the cross-section-weighted CCF using the direct simulation result of DLA cross section for each halo. We find that the cross-section-weighted CCF gives a steeper γ than the unweighted one, and agrees well with the result of Cooke et al. (2006). Finally, we compute angular CCF for direct comparison with observations.

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