Outflowing disk winds in B[e] Supergiants

Michel Curé (1), Diego F. Rial (2), Lydia Cidale (3)

(1) Departamento de Física, Universidad de Valparaíso, Chile,
(2) Departamento de Matemáticas, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Argentina,
(3) Facultad de Ciencias Astronómicas y Geofísicas, Universidad Nacional de La Plata, Argentina.

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, \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.

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



Email: michel.cure@uv.cl