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Wolf-Rayet Wind Models: Photometric and Polarimetric Variability

Published online by Cambridge University Press:  12 April 2016

Cláudia V. Rodrigues  and
Antônio Mário Magalhães
Cláudia V. Rodrigues
Affiliation:
INPE, Av. dos Astronautas, 1758 - 12227-900 São José dos Campos SP -Brazil IAG-USP, Av. Miguel Stefano, 4200 - 04301-904 São Paulo SP -Brazil
Antônio Mário Magalhães
Affiliation:
IAG-USP, Av. Miguel Stefano, 4200 - 04301-904 São Paulo SP -Brazil

Abstract

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We have modelled the observed random variation in broad band intensity and polarization of some isolated Wolf-Rayet stars assuming that their winds have localized, enhanced density regions (blobs). Our model is based on a Monte Carlo code that treats all Stokes parameters of the radiation bundle. This study indicates that the blobs must have sizes comparable to the stellar dimension and be near the base of the envelope. These blobs can be interpreted as a variable structure of large geometric cross section causing the observed polarimetric and photometric variability.

Type
Section I Observations of Non-spherical Winds
Information
International Astronomical Union Colloquium , Volume 169: Variable and Non-spherical Stellar Winds in Luminous Hot Stars , 1999 , pp. 57 - 61
Copyright
Copyright © Springer-Verlag 1999

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