Fig. 2. [3 ] 5007Å line profile of LV 5 (OW 158-323). a  Observed profile. b  Comparison with model profile (heavy solid line). The different components of the model are indicated by the light solid line (photoevaporated wind), dotted line (Mach disk) and dashed line (swept-back tail). Inset box shows magnification of the blue wing. The region of the spectrum that may be uncertain due to background subtraction is indicated by the light gray rectangle.