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Magnetic Field Diagnosis Through Spectropolarimetry*)

Published online by Cambridge University Press:  12 April 2016

Gautier Mathys
Gautier Mathys*
Affiliation:
European Southern Observatory, Casilla 19001, Santiago 19, Chile

Abstract

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An original approach, the moment technique, is applied to analyze the shapes of spectral lines of Ap stars recorded in both circular polarizations. The longitudinal magnetic field, the asymmetry of the longitudinal magnetic field, and the quadratic field of the studied stars are derived. From the consideration of these quantities and of their variations through the stellar rotation cycle, constraints on the spatially unresolved structure of the magnetic fields are obtained.

Type
II. Magnetic Fields: Observations and Theories
Information
International Astronomical Union Colloquium , Volume 138: Peculiar versus Normal Phenomena in A-Type and Related Stars , 1993 , pp. 232 - 246
Copyright
Copyright © Astronomical Society of the Pacific 1993

Footnotes

*)

Based on observations collected at the European Southern Observatory, La Silla, Chile

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