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2007MNRAS.375..735W - Mon. Not. R. Astron. Soc., 375, 735-744 (2007/February-3)
The association between gas and galaxies - II. The two-point correlation function.
WILMAN R.J., MORRIS S.L., JANNUZI B.T., DAVE R. and SHONE A.M.
Abstract (from CDS):
We do not reproduce the differences reported by Chen et al. between 1D ξAGmeasurements using galaxy subsamples of different spectral types. However, the full impact on the measurements of systematic differences in our samples is hard to quantify. We compare the observations with smoothed particle hydrodynamical (SPH) simulations and discover that in the observations ξAG is more concentrated to the smallest separations than in the simulations. The latter also display a `finger of god' elongation of ξAGalong the LOS in redshift space, which is absent from our data, but similar to that found by Ryan-Weber for the cross-correlation of quasar absorbers and Hi-emission-selected galaxies. The physical origin of these `fingers of god' is unclear, and we thus highlight several possible areas for further investigation.
Abstract Copyright: 2007 The Authors. Journal compilation © 2007 RAS
Journal keyword(s): galaxies: haloes - intergalactic medium - quasars: absorption lines
Simbad objects: 1
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