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Fig. 8

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Top: average temperature profiles measured for the CC clusters presented in this paper and for the CC clusters of Leccardi & Molendi (2008), examined in three redshift bins: 0.1 < z < 0.2 (red triangles), 0.2 < z < 0.3 (green squares), and 0.4 < z < 0.9 (blue dots). The profiles are consistent to be similar except for the central radial bin where the temperature dip in the high-redshift clusters is less pronounced. High-redshift clusters are indeed expected to be at a less advanced stage of their formation and are expected to have not grown enough mass to create a deep potential well and establish an efficient cooling in the central regions. We caution, however, that another concurring factor may be the difficulty to fully resolve the core at high redshift. Bottom: average temperature profiles measured for the NCC clusters presented in this paper and for the NCC clusters of Leccardi & Molendi (2008), examined in three redshift bins: 0.1 < z < 0.2 (red triangles), 0.2 < z < 0.3 (green squares), and 0.4 < z < 0.9 (blue dots). Although the average profiles are consistent at every radius, the slope of the high-redshift sample seems slightly steeper than that of the lower redshift samples, which is fully expected because of the less advanced stage of formation (and consequently less massive hot gas halos) of higher redshift clusters.

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