We investigate the evolution of the optical and near-infrared colour-magnitude relation in an homogeneous sample of massive clusters from z = 1 to the present epoch. By comparing deep Hubble Space Telescope Advanced Camera for Surveys imaging of X-ray selected MAssive Cluster Survey (MACS) clusters at z 0.5 to the similarly selected Las Campanas/AAT Rich Cluster Survey (LARCS) sample at z 0.1, we find that the rest-frame I (U - V)/I V slope of the colour-magnitude relation evolves with redshift which we attribute to the build up of the red sequence over time. This rest-frame slope evolution is not adequately reproduced by that predicted from semi-analytic models based on the Millennium Simulation despite a prescription for the build up of the red sequence by in-falling galaxies, strangulation .
Stott, J., Pimbblet, K., Edge, A., Smith, G., & Wardlow, J. (2009). The evolution of the red sequence slope in massive galaxy clusters. Monthly Notices of the Royal Astronomical Society, 394(4), 2098 - 2108. https://doi.org/10.1111/j.1365-2966.2009.14477.x