Number densities (cm^-3) and nucleation rates J_∗ (s^-1cm^-3) for both TiO₂ and SiO. Number densities calculated from the Drift-Phoenix model (Helling et al. 2006). J_{∗ ,Jeong} is the classical nucleation rate calculated with σ_∞ = 618 erg cm²; J_{∗ ,Lee} is calculated with temperature dependent σ_∞. J_{∗ ,Paquette} and J_{∗ ,Gail} have both been calculated using new vapour pressures (Wetzel et al. 2013). Blue lines surrounding J_{∗ ,Gail} are the upper and lower boundaries. These nucleation rates were calculated for an undepleted gas-phase.