Correlation of the turnaround mass and turnaround radius. Different colors and symbols represent different redshifts. Different rows depict different simulated cosmologies, as in the titles. In order to have the same scale for different redshifts, the third power of the turnaround radius was multiplied by the spherical-collapse–predicted turnaround density for the given cosmology and redshift. The right panel in each row shows the least-aspherical subsample of the structures (α_3D ≥ 0.6; see Sect. 3.2). The blue line represents the y = x line.