The structure of line-driven winds
Astrophysics Group, Blackett Laboratory, Imperial College London, Prince Consort Road, London SW7 2AZ, UK e-mail: email@example.com
Accepted: 11 September 2007
Following procedures pioneered by Castor et al. (1975, ApJ, 195, 157, [CAK]), spherically-symmetric supersonic winds for O stars are computed for matching to plane-parallel moving reversing layers (RL's) from Paper I (Lucy 2007, A&A, 468, 649). In contrast to a CAK wind, each of these solutions is singularity-free, thus allowing its mass-loss rate to be fixed by the regularity condition at the sonic point within the RL. Moreover, information propagation in these winds by radiative-acoustic waves is everywhere outwardly-directed, justifying the implicit assumption in Paper I that transonic flows are unaffected by inwardly-directed wave motions.
Key words: stars: early-type / stars: mass-loss / stars: winds, outflows
© ESO, 2007