Polynomial Approximants for the Calculation of Polarization Profiles in the He I 10830 Å Multiplet
The He I multiplet at 10830 Å is formed in the incomplete Paschen-Back regime for typical conditions found in solar and stellar atmospheres. The positions and strengths of the various components that form the Zeeman structure of this multiplet in the Paschen-Back regime are approximated here by polynomials. The fitting errors are smaller than ~10-2
Socas-Navarro, H. et al.
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2005