Color–magnitude diagram. Red stars and circles define spectroscopic cluster members with and without derived kinematics in our sample, respectively. Blue stars and circles show field galaxies with and without derived kinematics in our sample, respectively. The cluster red-sequence fit derived by Lidman et al. (2008) is shown as a black line with a shaded area: red-sequence galaxies are defined as galaxies redder than 0.2 mag blueward of this fit, which is shown with a shaded area. Magnitudes and colors are given in the AB system.