Description of anomalous Zeeman patterns in stellar astrophysics
arXiv:1301.1354 · doi:10.1051/eas/1258010
Abstract
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 "sigma" and "pi" 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.
submitted to "European Astronomical Society (EAS) Publication Series", proceedings of the first ECLA (European Conference on Laboratory Astrophysics), Paris, September 26th - 30th 2011, Editors : C. Stehlé, C. Joblin and L. d'Hendecourt