| |
 |
| Paper: |
Detection of the Linearly Polarised Spectrum of the Red Supergiant Star
α Ori |
| Volume: |
526, Solar Polarization Workshop 8 |
| Page: |
249 |
| Authors: |
Tessore, B.; López Ariste, A.; Mathias, P.; Lèbre, A.; Morin, J.; Josselin, E. |
| Abstract: |
At the solar limb, the observed linear polarisation is due to the
anisotropy of the radiation field induced by limb darkening.
It is maximal when it is seen parallel to the limb and it vanishes when
it is integrated over the spherically-symmetric solar disk.
Therefore for distant stars, that present spherical symmetry, linear
polarisation signatures are very difficult to observe.
However, strong linear polarisation features have been reported in the
prototypical red supergiant star α Ori (Betelgeuse).
We propose to explain them with an analytical model. |
|
|
|
|
|
