Redshift distortions of galaxy correlation functions
نویسندگان
چکیده
منابع مشابه
Redshift distortions of galaxy correlation functions
To examine how peculiar velocities can affect the 2-, 3-, and 4-point redshift correlation functions, we evaluate volume-average correlations for configurations that emphasize and minimize redshift distortions for four different volume-limited samples from each of the CfA, SSRS, and IRAS redshift catalogs. We present the results as the correlation length r0 and power index γ of the 2-point corr...
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We measure moments of the galaxy count probability distribution function in the two-degree field galaxy redshift survey (2dFGRS). The survey is divided into volume limited subsamples in order to examine the dependence of the higher order clustering on galaxy luminosity. We demonstrate the hierarchical scaling of the averaged p-point galaxy correlation functions, ξ̄p, up to p = 6. The hierarchica...
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We have investigated the redshift space distortions in the optically selected Durham/UKST Galaxy Redshift Survey using the 2-point galaxy correlation function perpendicular and parallel to the observer's line of sight, ξ(σ, π). We present results for the real space 2-point correlation function, ξ(r), by inverting the optimally estimated projected correlation function, which is obtained by integ...
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Using a novel two-dimensional coordinate system, we have derived a particularly simple way to express the redshift distortions in galaxy redshift surveys with arbitrary geometry in closed form. This method provides an almost ideal way to measure the value of β = Ω 0 /b in wide area surveys, since all pairs in the survey can be used for the analysis. In the limit of small angles, this result str...
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We discuss the behaviour of the redshiftand real-space correlation functions from the ESO Slice Project (ESP) galaxy redshift survey. ξ(s) for the whole survey is positive out to ∼ 80 h Mpc, with a smooth break from a power law. By projecting ξ(rp, π) , we recover the real–space correlation function ξ(r) , which below 10 h Mpc is reasonably well described by a power law ξ(r) = (r/r◦) −γ , with ...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 1994
ISSN: 0004-637X,1538-4357
DOI: 10.1086/173956