The structure of line-driven winds

Details The structure of line-driven winds The structure of line-driven winds

2007-09-12

arxiv.org/abs/0709.1883v1

Astronomy and Astrophysics

Astrophysics

Accepted by A&A; 7 pages, 1 table, 4 figures

Scientific paper

10.1051/0004-6361:20078236

Following procedures pioneered by Castor, Abbott & Klein (1975, [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). 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.

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