Do A-type Supergiants have Magnetic Fields?

Details Do A-type Supergiants have Magnetic Fields? Do A-type Supergiants have Magnetic Fields?

Nov 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aspc..337..324v&link_type=abstract

The Nature and Evolution of Disks Around Hot Stars, ASP Conference Series, Vol. 337, Proceedings of a meeting held 7-9 July 2004

Computer Science

3

Scientific paper

The accepted driving mechanism for the mass loss in A-supergiants is radiation pressure. Several clues, however, point to a model of co-rotating clouds of gas and the existence of a weak magnetic field on the surface. We report on spectropolarimetric observations between 1999 and 2003 of 12 A-type supergiants taken with the MuSiCoS spectropolarimeter at the 2m Bernard Lyot telescope at the Pic-du-Midi. We present the values of the derived longitudinal component of the magnetic field. The significance of the results is discussed.

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