clenspy.cosmology.concentration.DELTA_COLLAPSE

clenspy.cosmology.concentration.DELTA_COLLAPSE = 1.686

Linear critical overdensity for spherical collapse, used in the \(M_\star\) definition \(\sigma(R_\star, z) = \delta_c\). Child et al. (2018) Sec. 4 uses this value; so does their Eq. for \(\nu\).