Stellar mass surface density (left), star formation rate surface density (middle), and rest-frame UV concentration (right) as a function of stellar mass. To calculate the stellar mass surface density, we used the total-light radius, r100, while to calculate the star formation rate surface density, we used the half-light radius, r50, according to the definitions in Ribeiro et al. (2016). The size measurements can be performed for a limited number of sources for which the HST coverage is available. Black dots represent the Lyα emitting galaxies at 2 < z < 4, while red dots correspond to those with S/N(CIII]1908)> 3.