The Theoretical Polarization from Axisymmetric Circumstellar Envelopes with Constant Scattering Optical Depth

Details The Theoretical Polarization from Axisymmetric Circumstellar Envelopes with Constant Scattering Optical Depth The Theoretical Polarization from Axisymmetric Circumstellar Envelopes with Constant Scattering Optical Depth

Oct 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993mnras.264..565f&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Vol. 264, NO. 3/OCT1, P. 565, 1993

Astronomy and Astrophysics

Astronomy

Polarization - Radiative Transfer - Scattenng - Stars: Emission-Line, Be - Stars: Wolf-Rayet

Scientific paper

The single-scattering of light through an axisymmetric, optically thin envelope with iso-scattering optical depth is considered. The maximum theoretical polarization of Wolf-Rayet and Be stars is then investigated using three geometrical model envelopes that are frequently encountered in the literature: a two-component wind, a wedge-shaped disc and an oblate spheroid. The degree of polarization from such envelopes is found to be P≤0.6 per cent, consistent with observations of WR stars but not with those of Be stars, suggesting that the model is not consistent with the astrophysics of Be stars.

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