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

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


Comments: 19 pages, 6 figures