continuous line is simply a guide to the eye.[]{data-label="fig1"}](coexistence.eps "fig:"){width="15cm"}

0.5cm ![(Top) Cloud and shadow curve for model I within the $C_0$ approximation at increasing polydispersity: $s=0$, $s=0.1$ and $s=0.3$ . (Bottom) Same as above for fixed value of polydispersity $s=0.3$ and different choice of the stickiness adhesion (model I, IV and V) []{data-label="fig2"}](cs_modI.eps "fig:"){width="15cm"}\
2.0cm ![(Top) Cloud and shadow curve for model I within the $C_0$ approximation at increasing polydispersity: $s=0$, $s=0.1$ and $s=0.3$ . (Bottom) Same as above for fixed value of polydispersity $s=0.3$ and different choice of the stickiness adhesion (model I, IV and V) []{data-label="fig2"}](cs_s.3.eps "fig:"){width="15cm"}

0.5cm ![Behavior of the energy equation of state within our perturbative scheme. In all cases the quantity $\beta P v_0$ is plotted against the packing fraction $\eta$. In clockwise order, the first curve (left, top) reports a comparison of the perturbative versus the ‘exact’ BMCSL solution in the equation of state for polydisperse HS ($\tau=+\infty$). The other curves report the perturbative solution for the energy equation of state within the PY approximation for SHS Baxter model. Results are depicted for three values of temperature $\tau=0.15> \tau_c$, $\tau=0.1185\sim
\tau_c$ and $\tau=0.1<\tau_c$ and for different degrees of polydispersity. The choice for the 