Corner plot of the distribution of line-of-sight velocities for stars in Eridanus 2, assuming normal distributions with intrinsic mean μ_int and intrinsic dispersion σ_int. The blue, yellow, and pink contours indicate the 39- and 86% confidence areas (equivalent to 1- and 2-σ for a two-dimensional normal distribution) for stars in the putative star cluster (marginalized over cluster membership), stars in the bulk of Eridanus 2 (marginalized over cluster membership for possible cluster member stars), and stars at a larger radius as measured by Li et al. (2017). The maxima of the one-dimensional posteriors and the 68% confidence interval around it are indicated in the same colours above the on-diagonal panels. The pink circle and error bars indicate the result Li et al. (2017) themselves derive from their measurements.