[NeII] emission line profiles from photoevaporative disc winds

Details [NeII] emission line profiles from photoevaporative disc winds [NeII] emission line profiles from photoevaporative disc winds

2008-09-01

arxiv.org/abs/0809.0316v1

Mon.Not.Roy.Astron.Soc. 391 (2008) L64-L68

Astronomy and Astrophysics

Astrophysics

5 pages, 3 figures. Accepted for publication in MNRAS Letters

Scientific paper

10.1111/j.1745-3933.2008.00556.x

I model profiles of the [NeII] forbidden emission line at 12.81um, emitted by photoevaporative winds from discs around young, solar-mass stars. The predicted line luminosities (~ 1E-6 Lsun) are consistent with recent data, and the line profiles vary significantly with 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 blue-shift (5-10km/s). These results suggest that observations of [NeII] line profiles can provide a direct test of models of protoplanetary disc photoevaporation.

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