Scenario I: Surface densities (top) and LOS velocity maps (bottom) of snapshots of models that use the dwarf model D1 with two different orbits, showing model M1 (S4M4) with a tangential velocity of $u_{\mathrm{t}}=50\mathrm{km}{\mathrm{s}}^{-1}$ that projects with θ = 54° (left) and model M2 (S4M5) with 100 km s⁻¹ and 33° (middle). We also show model M6 (S11M12), which uses the more massive dwarf model D2 with a final velocity of 200 km s⁻¹ and an angle of 18°. The v_los maps are in the rest frame of the dwarf’s dark matter centre of mass. We note that ${\mathrm{\Sigma }}_{\mathrm{gas}}=1{\mathrm{M}}_{\odot }{\mathrm{pc}}^{-2}$ corresponds here to N_HI = 1.2 × 10²⁰ cm⁻².