Measurement of the Spatial Cross-Correlation Function of Damped Lyα Systems and Lyman Break Galaxies
- 12 December 2005
- journal article
- Published by American Astronomical Society in The Astrophysical Journal
- Vol. 636 (1) , L9-L12
- https://doi.org/10.1086/499779
Abstract
We present the first spectroscopic measurement of the spatial cross-correlation function between damped Lyman alpha systems (DLAs) and Lyman break galaxies (LBGs). We obtained deep u'BVRI images of nine QSO fields with 11 known z ~ 3 DLAs and spectroscopically confirmed 211 R < 25.5 photometrically selected z > 2 LBGs. 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 found the best fit correlation length value of r_0 = 2.9^(+1.4)_(-1.5) h^(-1)Mpc using a fixed value of gamma = 1.6. The implications of the DLA-LBG clustering amplitude on the average dark matter halo mass of DLAs are discussed.Comment: 12 pages, 2 figures, accepted for publication in Astrophysical Journal LetterKeywords
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This publication has 28 references indexed in Scilit:
- Measuring the Halo Mass ofz∼ 3 Damped Lyα Absorbers from the Absorber‐Galaxy Cross‐CorrelationThe Astrophysical Journal, 2005
- Survey for Galaxies Associated withz∼ 3 Damped Lyα Systems. I. Spectroscopic Calibration ofu′BVRIPhotometric SelectionThe Astrophysical Journal, 2005
- The Spatial Clustering of Star‐forming Galaxies at Redshifts 1.4 ≲z≲ 3.5The Astrophysical Journal, 2005
- The Clustering of Galaxies around Threez∼ 3 Damped Lyα AbsorbersThe Astrophysical Journal, 2004
- Galaxies and Intergalactic Matter at Redshiftz ∼ 3: OverviewThe Astrophysical Journal, 2003
- First Investigation of the Clustering Environment of Damped Lyα Absorbers atz ≃ 4The Astrophysical Journal, 2001
- A Counts‐in‐Cells Analysis of Lyman‐Break Galaxies at Redshiftz∼ 3The Astrophysical Journal, 1998
- The richness dependence of galaxy cluster correlations: results from a redshift survey of rich APM clustersMonthly Notices of the Royal Astronomical Society, 1997
- The statistics of peaks of Gaussian random fieldsThe Astrophysical Journal, 1986
- On the spatial correlations of Abell clustersThe Astrophysical Journal, 1984