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Redshift Evolution of the Correlation Function
Peter Capak
J. Blazek, D. Sanders, I. Szapudi, N. Scoville
Kyoto, May 23, 2005
Correlation function
• Probability above random that you will find two objects at a given (projected) distance
• Should trace the growth of structure• eSpICE allows for computation of 2pt function
in ~30sec for cosmos data– Allows for many measurements as a function of
many different parameters
• Results shown are preliminary
Correlation with Redshift and Magnitude
Correlation with Redshift and Type
Preliminary Results
• Brighter and older galaxies are more strongly clustered
• Increase in the correlation strength with redshift for bright galaxies
• Increase in the correlation slope with redshift