Outflowing disk winds in B[e] Supergiants

Details Outflowing disk winds in B[e] Supergiants Outflowing disk winds in B[e] Supergiants

2005-10-24

arxiv.org/abs/astro-ph/0510695v1

Astronomy and Astrophysics

Astrophysics

6 pages, 2 figures. To appear in the proceedings "Stars with the B[e] phenomenon"

Scientific paper

The effects of rapid rotation and bi--stability upon the density contrast between the equatorial and polar directions of a B[e] supergiant are investigated. Based on a new slow solution for different high rotational radiation--driven winds and the fact that bi--stability allows a change in the line--force parameters ($\alpha$, $k$, and $\delta$), the equatorial densities are about $10^2$--$10^3$ times higher than the polar ones. These values are in qualitative agreement with the observations. This calculation also permits to obtain the aperture angle of the disk.

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