Mathematics – Logic
Scientific paper
May 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aas...206.1008b&link_type=abstract
American Astronomical Society Meeting 206, #10.08; Bulletin of the American Astronomical Society, Vol. 37, p.444
Mathematics
Logic
Scientific paper
The two-point correlation function is an important measure of structure in the universe. Accurate determination of this function provides a test for different components of theoretical cosmological models. Here, we present a new method for calculating this function, utilizing the Euclidian Spatially Inhomogeneous Correlation Estimator (eSpICE - Szapudi et al. 2001), which greatly reduces necessary computing time. Using deep multi-color imaging in the COSMOS and other fields, we obtain photometric redshifts accurate to dz/(1+z) < 0.04 at z<2. These data cover more than 2.5 sq. degrees at Iab < 26. With this unprecedented depth, area, and color coverage, we bin using narrow photometric redshift slices and are able to examine trends in the redshift evolution of the correlation function. We also examine the evolution of the correlation function by galaxy spectral type, mass, and magnitude. This research was funded in part by NASA grant HST-GO-09822.07-A.
Blazek Jonathan
Capak Peter
Sanders Dave
Szapudi István
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