Outflowing disk winds in B[e] supergiants

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

(1) Departamento de Física, Facultad de Ciencias,
Universidad de Valparaíso, Chile.
(3) 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 , 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.

Reference: To appear in ``Stars with the B[e] Phenomenon'', ASP Conf. Ser. 2005, Michaela Kraus \& Anatoly S. Miroshnichenko, eds.
Status: Conference proceedings

Weblink: astro-ph/0510695


Email: michel.cure@uv.cl