Slice of the yx-planes of the 3D λ-Cephei-like models at different ISM inflow speeds, u_ISM ∈ {80, 40, 20, 10} km s⁻¹ (from left to right) in the number density, log(n) (top row) and n (bottom row); number density in [cm⁻³], axes in [pc]. The two left images in the bottom row feature number densities in the outer astrosheath above the values covered by the colour scale, up to n = 41.5 cm⁻³ and n = 30.6 cm⁻³, respectively. Taken with permission from Baalmann (2021, Fig. 4.18).