The VLT LBG redshift survey- II. Interactions between galaxies and the IGM at z∼ 3
- Crighton, N. H. M.
- Bielby, R.
- Shanks, T.
- Infante, L.
- Bornancini, C. G.
- Bouche, N.
- Lambas, D. G.
- Lowenthal, J. D.
- Minniti, D.
- Morris, S. L.
- Padilla, N.
- Peroux, C.
- Petitjean, P.
- Theuns, T.
- Tummuangpak, P.
- Weilbacher, P. M.
- Wisotzki, L.
- Worseck, G.
DOIAbstract
We have measured redshifts for 243 z≈ 3 quasars in nine Very Large Telescope (VLT) Visible Imaging and Multi-Object Spectrograph (VIMOS) Lyman-break galaxy (LBG) redshift survey areas, each of which is centred on a known bright quasar. Using the spectra of these quasars, we measure the cross-correlation between neutral hydrogen gas causing the Lyα forest and 1020 LBGs at z≈ 3. We find an increase in neutral hydrogen absorption within ≈5 h-1 Mpc of a galaxy in agreement with the results of Adelberger et al. The Lyα-LBG cross-correlation can be described by a power law on scales larger than 3 h-1 Mpc. When galaxy velocity dispersions are taken into account, our results at smaller scales (<2 h-1 Mpc) are also in g...
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