Magnetism and Activity of the Sun and Stars
J. Arnaud and N. Meunier (eds)
EAS Publications Series, Vol. 9, 2003
DOI: 10.1051/eas:2003110

Searching for Magnetic fields in A-type Supergiants

E. Verdugo¹, A. Talavera¹, A.I. Gómez de Castro², H.F. Henrichs³, V.C. Geers³ and K. Wiersema<sup>3

1</sup>  XMM-Newton Science Operations Centre, VILSPA, Madrid, Spain
²  Instituto de Astronomía y Geodesia, Universidad Complutense de Madrid, Spain
³  Astronomical Institute Anton Pannekoek, University of Amsterdam, The Netherlands

Abstract
We report on spectropolarimetric observations of 7 A-type supergiants taken with the MuSiCoS echelle spectropolarimeter mounted at the 2 m Bernard Lyot telescope at the Pic du Midi, during June-July 1999 and June-July 2002. We present the values of the derived longitudinal component of the magnetic field. The significance of the results is discussed.

© EAS, EDP Sciences 2003

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