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New Solutions to Line-Driven Winds of Hot Massive Stars

Published online by Cambridge University Press:  28 July 2017

Alex C. Gormaz-Matamala ,
Michel Curé ,
Lydia Cidale  and
Roberto Venero
Alex C. Gormaz-Matamala
Affiliation:
Instituto de Física y Astronomía, Universidad de Valparaíso, Casilla 5030, Valparaíso, Chile. email: alex.gormaz@postgrado.uv.cl
Michel Curé
Affiliation:
Instituto de Física y Astronomía, Universidad de Valparaíso, Casilla 5030, Valparaíso, Chile. email: alex.gormaz@postgrado.uv.cl
Lydia Cidale
Affiliation:
Departamento de Espectroscopía, Facultad de Ciencias Astronómicas y Geofísicas, UNLP.
Roberto Venero
Affiliation:
Departamento de Espectroscopía, Facultad de Ciencias Astronómicas y Geofísicas, UNLP.
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Abstract

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In the frame of radiation driven wind theory (Castor et al.1975), we present self-consistent hydrodynamical solutions to the line-force parameters (k, α, δ) under LTE conditions. Hydrodynamic models are provided by HydWind (Curé 2004). We evaluate these results with those ones previously found in literature, focusing in different regions of the optical depth to be used to perform the calculations. The values for mass-loss rate and terminal velocity obtained from our calculations are also presented.

We also examine the line-force parameters for the case when large changes in ionization throughout the wind occurs (δ-slow solutions, Curé et al.2011).

Keywords

Radiative transferHydrodynamicsStars: winds, outflowsStars: mass-loss
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 12 , Symposium S329: The Lives and Death-Throes of Massive Stars , November 2016 , pp. 401
Copyright
Copyright © International Astronomical Union 2017 

References

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