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