No Sun-like dynamo on the active star Andromedae from starspot asymmetry

No Sun-like dynamo on the active star Andromedae from starspot asymmetry

Infrared interferometry imaging of the old, magnetically active star [zeta] Andromedae reveals an asymmetric distribution of starspots, unlike the north-south starspot symmetry observed on the Sun, meaning the underlying dynamo mechanisms must be different.

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Veröffentlicht in:Nature (London) 2016-05, Vol.533 (7602), p.217
Hauptverfasser: Roettenbacher, R. M, Monnier, J. D, Korhonen, H, Aarnio, A. N, Baron, F, Che, X, Harmon, R. O, Kvri, Zs, Kraus, S, Schaefer, G. H, Torres, G, Zhao, M, ten Brummelaar, T. A, Sturmann, J, Sturmann, L
Format: Artikel
Sprache:eng
Schlagworte:
Andromeda (Constellation)
Asymmetry
Interferometry
Latitude
Magnetic fields
Natural history
Observations
Stars
Symmetry
Symmetry (Physics)
Temperature
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Zusammenfassung:Infrared interferometry imaging of the old, magnetically active star [zeta] Andromedae reveals an asymmetric distribution of starspots, unlike the north-south starspot symmetry observed on the Sun, meaning the underlying dynamo mechanisms must be different.
ISSN:0028-0836
1476-4687
DOI:10.1038/nature17444