The theoretical polarization of pure scattering axisymmetric circumstellar envelopes

Details The theoretical polarization of pure scattering axisymmetric circumstellar envelopes The theoretical polarization of pure scattering axisymmetric circumstellar envelopes

Nov 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994apj...435..372f&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 435, no. 1, p. 372-378

Astronomy and Astrophysics

Astrophysics

6

B Stars, Electron Scattering, Light Scattering, Polarization (Waves), Stellar Envelopes, Stellar Models, Stellar Spectra, Thomson Scattering, Approximation, Mathematical Models, Rayleigh Scattering

Scientific paper

The Sobolev approach to the scattering of starlight through a pure scattering circumstellar envelope is developed. The theoretical polarization due to electron scattering in Be star envelopes is calculated for two geometries (an equatorially enhanced envelope and a spheroidal envelope). Only the disk-type envelope is found to yield a maximum polarization consistent with the observed range for Be stars. A lower limit, analytical approximation to the theoretical polarization from a pure scattering envelope is obtained.

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