The ESO Slice Project (ESP) Galaxy Redshift Survey. VII. The Redshift and Real-Space Correlation Functions

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dc.creatorGuzzo, L.
dc.creatorBartlett, J. G.
dc.creatorCappi, A.
dc.creatorMaurogordato, S.
dc.creatorZucca, E.
dc.creatorZamorani, G.
dc.creatorBalkowski, C.
dc.creatorBlanchard, A.
dc.creatorCayatte, V.
dc.creatorChincarini, G.
dc.creatorCollins, C. A.
dc.creatorMaccagni, D.
dc.creatorMacGillivray, H.
dc.creatorMerighi, R.
dc.creatorMignoli, M.
dc.creatorProust, D.
dc.creatorRamella, M.
dc.creatorScaramella, R.
dc.creatorStirpe, G. M.
dc.creatorVettolani, G.
dc.date1999-01-27
dc.date.accessioned2026-07-07T02:30:12Z
dc.date.available2026-07-07T02:30:12Z
dc.descriptionWe present analyses of the two-point correlation properties of the ESP galaxy redshift survey. From the redshift-space correlation function xi(s), we see positive clustering out to separations ~50/h Mpc, with a smooth break on larger scales and zero-crossing between 60 and 80/h Mpc. xi(s) is reasonably well described by a shallow power law with γ~1.5 between 3 and 50/h Mpc, while on smaller scales (0.2-2/h Mpc) it has a shallower slope (γ~ 1). We examine the full effect of redshift-space distortions through the two-dimensional correlation function xi(rp,pi), from which we project out the real-space xi(r) below 10/h Mpc. This function is well described by a power-law model (r/r_o)^{-γ}, with r_o=4.15^{+0.20}_{-0.21} h^{-1} Mpc and γ=1.67^{+0.07}_{-0.09}. Comparison to other redshift surveys shows a consistent picture in which clustering remains positive out to separations of 50/h Mpc or larger, in substantial agreement with the results obtained from angular surveys like the APM and EDSGC. Also the shape of the two-point correlation function is remarkably unanimous among these data sets, in all cases requiring more power above 5/h Mpc (a `shoulder'), than a simple extrapolation of the canonical xi(r)=(r/5)^{-1.8}. xi(s) for volume-limited subsamples shows evidence of luminosity segregation only for the most luminous sample with M_{b_J}\le -20.5. When redshift-space distortions are removed through projection of xi(rp,pi), however, a weak dependence on luminosity is seen at small separations also at fainter magnitudes. This effect is masked in redshift space, as the mean pairwise velocity dispersion experiences a parallel increase, basically erasing the effect of the clustering growth on xi(s).
dc.descriptionLatex, uses aa.cls (included); 17 pages with colour figures. Submitted to A&A
dc.identifierhttps://arxiv.org/abs/astro-ph/9901378
dc.identifierhttp://arxiv.org/abs/astro-ph/9901378
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/13744
dc.subjectAstrophysics
dc.titleThe ESO Slice Project (ESP) Galaxy Redshift Survey. VII. The Redshift and Real-Space Correlation Functions
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