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

Author

Listed:
  • R. M. Roettenbacher

    (University of Michigan)

  • J. D. Monnier

    (University of Michigan)

  • H. Korhonen

    (Finnish Centre for Astronomy with ESO (FINCA), University of Turku
    Dark Cosmology Centre, Niels Bohr Institute, University of Copenhagen)

  • A. N. Aarnio

    (University of Michigan)

  • F. Baron

    (University of Michigan
    Georgia State University)

  • X. Che

    (University of Michigan)

  • R. O. Harmon

    (Ohio Wesleyan University)

  • Zs. Kővári

    (Konkoly Observatory, Research Center for Astronomy and Earth Sciences, Hungarian Academy of Sciences)

  • S. Kraus

    (University of Michigan
    School of Physics, University of Exeter)

  • G. H. Schaefer

    (Center for High Angular Resolution Astronomy, Georgia State University)

  • G. Torres

    (Harvard-Smithsonian Center for Astrophysics)

  • M. Zhao

    (University of Michigan
    Pennsylvania State University)

  • T. A. ten Brummelaar

    (Center for High Angular Resolution Astronomy, Georgia State University)

  • J. Sturmann

    (Center for High Angular Resolution Astronomy, Georgia State University)

  • L. Sturmann

    (Center for High Angular Resolution Astronomy, Georgia State University)

Abstract

Infrared interferometry imaging of the old, magnetically active star ζ 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.

Suggested Citation

  • R. M. Roettenbacher & J. D. Monnier & H. Korhonen & A. N. Aarnio & F. Baron & X. Che & R. O. Harmon & Zs. Kővári & S. Kraus & G. H. Schaefer & G. Torres & M. Zhao & T. A. ten Brummelaar & J. Sturmann , 2016. "No Sun-like dynamo on the active star ζ Andromedae from starspot asymmetry," Nature, Nature, vol. 533(7602), pages 217-220, May.
    • Handle: RePEc:nat:nature:v:533:y:2016:i:7602:d:10.1038_nature17444
    DOI: 10.1038/nature17444
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