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Baryon Content of Galaxy Clusters at z=0-0.6

Image Credit: Lin et al. 2012, ApJL, 745, 3

The upper panel shows the baryon mass fraction, while the lower panel shows the stellar mass fraction. The solid and open circles are clusters from two different z=0.1-0.6 samples, and the solid squares are z<0.1 clusters. The horizontal dashed line is the cosmic baryon fraction from WMAP (Komatsu et al. 2009). No attempt has been made to include the contribution from the intracluster light.