Implications for Policy-Making and Further Developments

A discussion of the overall findings specifically aimed at highlighting the implications for policy-making. We will argue that sense-making processes can play an important role in helping design policies, in mapping and in understanding how people of given social milieus interpret social reality and therefore intend to act or react upon it. In recent years, a more realistic understanding of human behaviour and decision-making has challenged the often-implicit assumptions about people on which policies were often conceived. From the individual rational choice based citizen, we moved to a bounded rationality perspective. A further step, outlined by this project, is to take into account the interpretative and cultural nature of human behaviour as a fundamental element to consider at both the policy design and implementation stages.

The Rest-frame H-band Luminosity Function of Red-sequence Galaxies in Clusters at 1.0 < z < 1.3

We present results on the rest-frame H-band luminosity functions (LFs) of red-sequence galaxies in seven clusters at 1.0 < z < 1.3 from the Gemini Observations of Galaxies in Rich Early Environments Survey. Using deep GMOS and IRAC 3.6 μm imaging, we identify red-sequence galaxies and measure their LFs down to MH∗ ∼ MH∗ + (2.0 - 3.0) . By stacking the entire sample, we derive a shallow faint-end slope of α ∼ -0.35-0.15+0.15 and MH∗ ∼ -23.520.17+0.15, suggesting that there is a deficit of faint red-sequence galaxies in clusters at high redshift. By comparing the stacked red-sequence LF of our sample with a sample of clusters at z ∼ 0.6, we find an evolution of the faint end of the red sequence over the ∼2.6 Gyr between the two samples, with the mean faint-end red-sequence luminosity growing by more than a factor of 2. The faint-to-luminous ratio of our sample (0.78-0.15+0.19) is consistent with the trend of decreasing ratio with increasing redshift proposed in previous studies. A comparison with the field shows that the faint-to-luminous ratios in clusters are consistent with those in the field at z ∼ 1.15 and exhibit a stronger redshift dependence. Our results support the picture that the buildup of faint red-sequence galaxies occurs gradually over time and suggest that faint cluster galaxies, similar to bright cluster galaxies, already experience the quenching effect induced by the environment at z ∼ 1.15