2008MNRAS.391L..64A

I model profiles of the [Neii] forbidden emission line at 12.81µm, emitted by photoevaporative winds from discs around young, solar mass stars. The predicted line luminosities (∼10^–6L_☉) are consistent with recent data, and the line profiles vary significantly with the disc inclination. Edge-on discs show broad (30-40km/s) double-peaked profiles, due to the rotation of the disc, while in face-on discs the structure of the wind results in a narrower line (≃10km/s) and a significant blueshift (5-10km/s). These results suggest that the observations of [Neii] line profiles can provide a direct test of models of protoplanetary disc photoevaporation.