Table 2
Properties of the large-scale magnetic field of AU Mic and EV Lac, for the Stokes V, Stokes IV and Stokes IVQU ZDI reconstruction schemes.
| Quantity | AU Mic | EV Lac | ||||||
|---|---|---|---|---|---|---|---|---|
| V | IV | IVQU | V | IV | IVQU | |||
| υD (km s−1) | 5.3 | 3.5 | 3.5 | 5.3 | 3.5 | 3.5 | ||
| fP | 0.2 | 0.2 | 0.2 | 0.15 | 0.15 | 0.15 | ||
| fI | 0.9 | 0.9 | 1.0 | 1.0 | ||||
| ψ (°) | 26 ± 5 | 86 ± 5 | ||||||
| <BP>(G) | 355 | 935 | 920 | 520 | 995 | 845 | ||
| <BI> (kG) | 1.6 | 4.2 | 4.1 | 3.5 | 6.6 | 5.6 | ||
| <BI,max> (kG) | 3.5 | 9.5 | 10.1 | 10.3 | 13.2 | 12.5 | ||
| <Bs> (kG) | 1.6 | 2.6 | 2.6 | 2.5 | 4.3 | 4.2 | ||
| Bd (kG) | 0.25 | 1.15 | 1.06 | 0.34 | 0.80 | 0.62 | ||
| Tilt (°) | 34 | 11 | 9 | 90 | 28 | 35 | ||
| Phase | 0.54 | 0.54 | 0.57 | 0.92 | 0.82 | 0.90 | ||
| Poloidal (%) | 84 | 98 | 97 | 95 | 89 | 82 | ||
| Axisymetry (%) | 29 | 97 | 96 | 2 | 82 | 54 | ||
| Pol dipole (%) | 37 | 70 | 60 | 32 | 63 | 45 | ||
Notes. In each case, we list the assumed Doppler width υD and polarization fP filling factor used in the ZDI modeling, the inferred values of the angle ψ of the projected stellar rotation axis on the plane of the sky, the reconstructed large-scale field strength <BP> and corresponding average small-scale field <BI> quadratically averaged over the whole star, the maximum small-scale field <BI,max> at the surface of the star, the phase-averaged small-scale field <Bs> computed over the visible (limb darkened) stellar hemisphere (directly comparable to the small-scale field <B> measured with ZeeTurbo), the polar strength Bd of the large-scale field dipole component, the tilt of the dipole field to the rotation axis and the phase towards which it is tilted, the amount of magnetic energy reconstructed in the poloidal component of the large-scale field, and in the axisymmetric dipole mode (m = 0, ℓ = 1) of this component. Error bars are typically equal to 10 percent for field strengths and percentages and 5° for field inclinations.
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