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The structure of Ap star magnetic fields

  • Gautier Mathys
IV. Non-classical Phenomena in Early-Type Stars
Part of the Lecture Notes in Physics book series (LNP, volume 401)

Abstract

Constraints on the structure of the magnetic field of Ap stars are derived from observations of spectral line profiles recorded in circularly polarized light. In particular, an original, quantitative analysis of the crossover effect, through the moment technique, is presented. Departures of the field structure from a centred dipole are found for several stars.

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References

  1. Babcock H.W., 1956, ApJ 124, 489Google Scholar
  2. Borra E.F., Landstreet J.D., 1980, ApJS 42, 421Google Scholar
  3. Mathys G., 1989, Fundam. Cosmic Phys. 13, 143Google Scholar
  4. Mathys G., 1991, A&AS 89, 121Google Scholar
  5. Thompson I.B., Brown D.N., Landstreet, J.D., 1987, ApJS 64, 219Google Scholar

Copyright information

© Springer-Verlag 1992

Authors and Affiliations

  • Gautier Mathys
    • 1
  1. 1.Geneva ObservatorySauvernySwitzerland

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