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| Paper: |
Do A-type Supergiants have Magnetic Fields? |
| Volume: |
337, The Nature and Evolution of Disks Around Hot Stars |
| Page: |
324 |
| Authors: |
Verdugo, E.; Henrichs, H.F.; Talavera, A.; Gomez de Castro, A.I.; Schnerr, R.S.; Geers, V.C. |
| Abstract: |
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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