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Magnetic Field Structure and Activity of the He-burning Giant 37 Comae

Tsvetkova, S. ; Petit, P. ; Konstantinova-Antova, R. ; Aurière, M. ; Wade, G. A. ; Charbonnel, C. ; Drake, N. A.

In: Proceedings of the International Astronomical Union, 2013, vol. 9, no. S302, p. 367-368

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    Titre
    • Magnetic Field Structure and Activity of the He-burning Giant 37 Comae
    Auteur
    • Tsvetkova, S.. Institute of Astronomy and NAO, Bulgarian Academy of Sciences, Bulgaria email: stsvetkova@astro.bas.bg
    • Petit, P.. IRAP, UMR 5277, CNRS and Université de Toulouse, France
    • Konstantinova-Antova, R.. Institute of Astronomy and NAO, Bulgarian Academy of Sciences, Bulgaria email: stsvetkova@astro.bas.bg
    • Aurière, M.. IRAP, UMR 5277, CNRS and Université de Toulouse, France
    • Wade, G. A.. Department of Physics, Royal Military College of Canada, Ontario, Canada
    • Charbonnel, C.. IRAP, UMR 5277, CNRS and Université de Toulouse, France
    • Drake, N. A.. Sobolev Astronomical Institute, St. Petersburg State University, Russia
    Type de document
    • Postprint
    Langue
    • Anglais
    Publié dans
    • Proceedings of the International Astronomical Union, 2013, vol. 9, no. S302, p. 367-368. Cambridge University Press
    Autre version électronique
    Identifiant OAI-PMH
    • oai:doc.rero.ch:297091
    Summary
    We present the first magnetic map of the late-type giant 37 Com. The Least Squares Deconvolution (LSD) method and Zeeman Doppler Imaging (ZDI) inversion technique were applied. The chromospheric activity indicators Hα, S-index, Ca ii IRT and the radial velocity were also measured. The evolutionary status of the star has been studied on the basis of state-of-the-art stellar evolutionary models and chemical abundance analysis. 37 Com appears to be in the core Helium-burning phase