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Table 2

Magnetic properties of 61 Cyg A extracted from the ZDI maps.

Dates No of v r B mean Poloidal Dipole Quad Oct Axi Axi Ωeq dΩ
obs (km s-1) (G) (%tot) (%pol) (%pol) (%pol) (%tot) (%pol) (rad d-1) (rad d-1)

2007.59 12 –65.47 ± 0.05 12 ± 3 93 ± 5 77 ± 9 17 ± 7 5 ± 3 80 ± 13 80 ± 17
2008.64 9 –65.48 ± 0.05 3 ± 1 92 ± 2 56 ± 5 36 ± 5 8 ± 2 56 ± 10 53 ± 11
2010.55 16 –65.48 ± 0.05 5 ± 2 87 ± 3 19 ± 6 21 ± 5 44 ± 13 7 ± 2 2 ± 4 0.18 ± 0.03 0.04 ± 0.02
2013.61 13 –65.49 ± 0.05 9 ± 6 99 80 ± 9 16 ± 7 3 ± 1 77 ± 6 77 ± 6
2014.61 14 –65.50 ± 0.05 8 ± 4 93 ± 4 78 ± 8 18 ± 6 4 ± 3 81 ± 7 81 ± 9
2015.54 15 –65.52 ± 0.05 12 ± 5 87 ± 5 85 ± 9 12 ± 6 2 ± 1 59 ± 12 55 ± 20

Notes. The columns represent fractional dates, number of observations, radial velocity (vr), mean magnetic field strength (Bmean), fraction of magnetic energy reconstructed as the poloidal component, and fraction of poloidal magnetic field stored as dipole, quadrupole, and octopole modes. Finally it also shows the fraction of the total magnetic energy in the axisymmetric component of the magnetic field, and the poloidal axisymmetric fraction (for ). The differential rotation parameters Ωeq and dΩ are also shown in the last two columns.

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