Recovering the real-space correlation function from photometric redshift surveys

Abstract

Measurements of clustering in large-scale imaging surveys that make use of photometric redshifts depend on the uncertainties in the redshift determination. We have used light-cone simulations to show how the deprojection method successfully recovers the real space correlation function when applied to mock photometric redshift surveys. We study how the errors in the redshift determination affect the quality of the recovered two-point correlation function. Considering the expected errors associated to the planned photometric redshift surveys, we conclude that this method provides information on the clustering of matter useful for the estimation of cosmological parameters that depend on the large scale distribution of galaxies.

11 pages, 8 figures. Accepted for publication in MNRAS

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• The ALHAMBRA survey: evolution of galaxy clustering since $z\sim 1$
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• Can We Detect the Color-Density Relation with Photometric Redshifts?
• The ALHAMBRA survey: evolution of galaxy spectral segregation
• The clustering of LRGs in the DECaLS DR8 footprint: distance constraints from baryon acoustic oscillations using photometric redshifts