Toomre diagram (upper left) for each of our samples: thin disc stars (grey points), dissipative component (mostly thick disc stars – black dots), and accretion component (squares). The light grey semi-circle indicates the constant peculiar velocity (u² + v² + w²)^1/2 = 40 km s^-1. Also shown are the distance (upper right), [α/Fe] (bottom left), and eccentricity (bottom right) distributions of the thin disc (grey line) dissipative (solid black line) and accretion (black dashed line) components.