Outflowing disk formation in B[e] supergiants due to rotation and bi-stability in radiation driven wind

M. CURÉ, L. CIDALE, D. RIAL

ASTRONOMY AND ASTROPHYSICS REVIEW

Año: 2005

0935-4956

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 , the equatorial densities are about 10^2 to 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