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

CURE, M.; RIAL, D.; CIDALE, L.

ASTRONOMY AND ASTROPHYSICS

EdP-Sciences

Lugar: Les Ulis - Francia; Año: 2005 vol. 437 p. 929 - 933

0004-6361

The effects of rapid rotation and bi-stability upon the density contrast between the equatorial and polar directions of a B[e] supergiant are re-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 (á, k, and ä), the equatorial densities are about 10^2-104 times higher than the polar ones. These values are in qualitative agreement with the observations.