Photon Escape from the Interstellar Medium
Benedetta Ciardi, Luca Graziani

Evolution of ionisation field (black) produced by a given stellar distribution into a Gaussian (top six panels) and a fractal (bottom six panels) density field. The time evolution (columns, from left to right, refer to t = 0.005, 0.5, 5 Myr respectively) of slices at 0 (first row) and 265 pc (second row) above the midplane is shown. For details see Ciardi, Bianchi & Ferrara (2002).

This priority program is funded by the
German Research Foundation DFG.