Figure 7: The neutral f -mode sequences for EOS A. Shown are the ratio of rotational to gravitational energy (upper panel) and the ratio of the critical angular velocity to the angular velocity at the mass-shedding limit for uniform rotation (lower panel) as a function of gravitational mass. The solid curves are the neutral mode sequences for , and (from top to bottom), while the dashed curve in the upper panel corresponds to the mass-shedding limit for uniform rotation. The f -mode becomes CFS-unstable even at 85% of the mass-shedding limit, for models constructed with this EOS. (Figure 2 of Morsink, Stergioulas, and Blattning [230].)