Toomre diagrams ($\sqrt{V_R^2+V_Z^2}$ vs V_ϕ) for the GALAH DR3 stars in bins of [Fe/H]and age. Top: Toomre diagrams for the GALAH DR3 stars, using the [Fe/H], age, and velocities from the Buder et al. (2021) catalogue, in bins of age and [Fe/H], similar to Fig. 3. Bottom: Same as top figure, but for the same stars with Buder et al. (2021) [Fe/H]and velocities, but with StarHorse ages with isochrones ranging to 13.73 Gyr.