Is the wind of the Oe star HD 155806 magnetically confined?

Details Is the wind of the Oe star HD 155806 magnetically confined? Is the wind of the Oe star HD 155806 magnetically confined?

2008-12-12

arxiv.org/abs/0812.2464v1

Astronomy and Astrophysics

Astrophysics

2 pages, 1 figure. Proceedings IAU Symposium No. 259, 2009. Cosmic Magnetic Fields: From Planets, to Stars and Galaxies

Scientific paper

10.1017/S1743921309030786

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 the results and implications of those observations.

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