## Limb-Darkened Radiation-Driven Winds from Massive Stars

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

(1) Universidad de Valparaıso, Chile

(2) Universidad Nacional de La Plata &

Instituto de Astrofısica La Plata, CONICET-UNLP, Argentina

(3) Universidad de Buenos Aires, Argentina

We calculated the influence of the limb-darkened finite

disk correction factor in the theory of radiation-driven

winds from massive stars. We solved the 1-D m-CAK

hydrodynamical equation of rotating radiation-driven

winds for all three known solutions, i.e., fast,

Omega-slow and delta-slow. We found that for the

fast solution, the mass loss rate is increased by a factor

∼ 10%, while the terminal velocity is reduced about

10%, when compared with the solution using a finite

disk correction factor from a uniformly bright star. For

the other two slow solutions the changes are almost

negligible.

Although, we found that the limb darkening has no

effects on the wind momentum luminosity relationship, it

would affect the calculation of synthetic line profiles and

the derivation of accurate wind parameters.

**Reference: **ApJ

Status: Manuscript has been accepted

**Weblink: **http://xxx.lanl.gov/abs/1207.6009

**Comments: **19 pages, 6 figures

**Email: **michel.cure@uv.cl