Figure 1. Animation
6 Myr evolution of the column density after self-gravity is turned on. Self-gravity is turned on at a global evolutionary time of t=230 Myr. The panels show (left) an edge-on projection of the inner 1 kpc × 1.5 kpc of the simulated volume; (bottom right) a face-on projection of the simulated volume, with a 1 kpc2 footprint; and (top right) a close-up of the structured, irregular, dense cloud shown with a dashed box in the bottom right panel.