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Description of anomalous Zeeman patterns in stellar astrophysics

Published online by Cambridge University Press:  13 February 2013

J.-C. Pain  and
F. Gilleron
J.-C. Pain
Affiliation:
CEA, DAM, DIF, 91297 Arpajon, France
F. Gilleron
Affiliation:
CEA, DAM, DIF, 91297 Arpajon, France

Abstract

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The influence of a magnetic field on the broadening of spectral lines and transition arrays in complex spectra is investigated. The anomalous absorption or emission Zeeman pattern is a superposition of many profiles with different relative strengths, shifts, widths, asymmetries and sharpnesses. The σ and π profiles can be described statistically, using the moments of the Zeeman components. We present two statistical modellings: the first one provides a diagnostic of the magnetic field and the second one can be used to include the effect of a magnetic field on simulated atomic spectra in an approximate way.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 58: ECLA - European Conference on Laboratory Astrophysics , 2012 , pp. 69 - 73
Copyright
© The Author(s) 2013

References

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