Is the wind of the Oe star HD 155806 magnetically confined?
Abstract
Oe stars are a subset of the O-type stars that exhibit emission lines from a circumstellar disk. The recent detection of magnetic fields in some O-type stars suggests a possible explanation for the stability of disk-like structures around Oe stars. According to this hypothesis, the wind of the star is channeled by a dipolar magnetic field producing a disc in the magnetic equatorial plane. As a test of this model, we have obtained spectropolarimetric observations of the hottest Galactic Oe star HD 155806. Here we discuss its results and implications.
- Publication:
-
Cosmic Magnetic Fields: From Planets, to Stars and Galaxies
- Pub Date:
- April 2009
- DOI:
- 10.1017/S1743921309030786
- arXiv:
- arXiv:0812.2464
- Bibcode:
- 2009IAUS..259..385P
- Keywords:
-
- Stars: magnetic fields;
- stars: mass loss;
- stars: early-type;
- stars: emission-line;
- Astrophysics
- E-Print:
- 2 pages, 1 figure. Proceedings IAU Symposium No. 259, 2009. Cosmic Magnetic Fields: From Planets, to Stars and Galaxies