Measurement of the spatial cross-correlation function of damped Lyα systems and Lyman break galaxies

Jeff Cooke, Arthur M. Wolfe, Eric Gawiser, Jason X. Prochaska

Research output: Contribution to journalReview article

27 Scopus citations

Abstract

We present the first spectroscopic measurement of the spatial cross-correlation function between damped Lyα systems (DLAs) and Lyman break galaxies (LBGs). Analysis of deep u'BVRI imaging of nine QSO fields with 11 known z ∼ 3 DLAs has spectroscopically confirmed 211 z > 2 LBGs to R = 25.5. We find strong evidence for an overdensity of LBGs near DLAs versus random, the results of which are similar to that of LBGs near other LBGs. A maximum likelihood cross-correlation analysis finds the best-fit value for the correlation length to be r0 = 2.9-1.5+1.4h -1 Mpc using a fixed value of γ = 1.6. The implications of the DLA-LBG clustering amplitude on the average dark matter halo mass of DLAs are discussed.

Original languageEnglish (US)
Pages (from-to)L9-L12
JournalAstrophysical Journal
Volume636
Issue number1 II
DOIs
StatePublished - Jan 1 2006

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Keywords

  • Galaxies: evolution
  • Galaxies: formation
  • Galaxies: high-redshift
  • Quasars: absorption lines

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