150278 20251017144638.0 doi 10.1093/mnras/stw721 sideral 142475 ART-2016-142475 eng Asorey, J. (orcid)0000-0002-6211-499X Galaxy clustering with photometric surveys using PDF redshift information 2016 Access copy available to the general public Unrestricted Photometric surveys produce large-area maps of the galaxy distribution, but with less accurate redshift information than is obtained from spectroscopic methods. Modern photometric redshift (photo-z) algorithms use galaxy magnitudes, or colours, that are obtained through multiband imaging to produce a probability density function (PDF) for each galaxy in the map. We used simulated data to study the effect of using different photo-z estimators to assign galaxies to redshift bins in order to compare their effects on angular clustering and galaxy bias measurements. We found that if we use the entire PDF, rather than a single-point (mean or mode) estimate, the deviations are less biased, especially when using narrow redshift bins. When the redshift bin widths are Δz = 0.1, the use of the entire PDF reduces the typical measurement bias from 5 per cent, when using single point estimates, to 3 per cent. info:eu-repo/semantics/openAccess All rights reserved http://www.europeana.eu/rights/rr-f/ 4.961 2016 ASTRONOMY & ASTROPHYSICS 11 / 63 = 0.175 2016 Q1 T1 2.387 2016 Space and Planetary Science 2016 Q1 Astronomy and Astrophysics 2016 Q1 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Carrasco Kind, M. Sevilla-Noarbe, I. Brunner, R.J. Thaler, J. 459, 2 (2016), 1293-1309 Mon. not. R. Astron. Soc. Monthly notices of the Royal Astronomical Society 0035-8711 2237193 http://zaguan.unizar.es/record/150278/files/texto_completo.pdf Versión publicada 2596254 http://zaguan.unizar.es/record/150278/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:150278 articulos driver 2025-10-17-14:30:44 ARTICLE