Polarization from the Structured Envelopes of Cool Evolved Stars
Astrophysics
2008-10-24 v1
Abstract
We present preliminary calculations of electron scattering polarizations from models of structured cool star envelopes. We note that net polarizations from unresolved sources can result from non-spherical scattering envelopes and/or anisotropic illumination from a photosphere that has brightness variations. The resultant polarizations are quite small (hundreths of a percent); however, Rayleigh scattering from molecular opacity and/or dust scattering from the more extended envelope under similar considerations may produce higher polarizations.
Cite
@article{arxiv.0810.4287,
title = {Polarization from the Structured Envelopes of Cool Evolved Stars},
author = {R Ignace and G D Henson and J Carson},
journal= {arXiv preprint arXiv:0810.4287},
year = {2008}
}
Comments
to appear in conference proceedings of The Biggest, Baddest, Coolest Stars