The observed age vs. M_V relation along with the maximum likelihood models from Sect. 3.2. The solid (blue curves) represent models that have F_MID  = 0, and from left to right have t₄ values ranging from 100 Myr (left) to 10 Gyr (right). All these models have M ⋆  values between 5 and 6 × 10⁵ M_⊙. The dashed (red) lines have similar M ⋆  values, but no mass dependent disruption and a small amount of mass independent disruption. The dash-dotted (green) lines also represent models with a truncation mass ( ≳ 10⁶M_⊙) but have higher mass independent disruption rates.