Magnetism and Activity of the Sun and Stars
J. Arnaud and N. Meunier (eds)
EAS Publications Series, Vol. 9, 2003
DOI: 10.1051/eas:2003092
Measuring transverse magnetic fields: the influence of a polarized continuum
J.-L. LeroyObservatoire Midi-Pyrénées, 14 Av. Belin, 31400 Toulouse, France
Abstract
The diagnosis of stellar magnetic fields must include the determination
of the transverse field component, thus the measurement of linear
polarization across spectral lines. While the neighbouring continuum is
often considered as a zero reference level, it can be polarized by various
scattering mechanisms. I discuss some consequences of such a superposition.
© EAS, EDP Sciences 2003


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