Constraints on Galaxy Photometric Redshift Error Distributions Using Two-Point Correlation Functions

Details Constraints on Galaxy Photometric Redshift Error Distributions Using Two-Point Correlation Functions Constraints on Galaxy Photometric Redshift Error Distributions Using Two-Point Correlation Functions

May 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...210.7703s&link_type=abstract

American Astronomical Society Meeting 210, #77.03; Bulletin of the American Astronomical Society, Vol. 39, p.184

Astronomy and Astrophysics

Astronomy

Scientific paper

Photometric redshift (photo-z) errors are potentially one of the leading sources of uncertainty in many upcoming dark energy experiments. We investigate how well the redshift distributions of
galaxies binned by photo-z can be determined from galaxy two-point angular correlations. We utilize both the cross-correlations between different photo-z bins and the cross-correlation with a spatially overlapping spectroscopic calibration sample (as proposed by Newman (2006)). A main goal of this work is to determine the required sky coverage and redshift distribution of this calibration sample (for general, non-Gaussian photo-z error models) in order to meet the tolerances of planned surveys such as the LSST or JDEM.

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