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

  • S. Tsvetkova (a1), P. Petit (a2), R. Konstantinova-Antova (a1) (a2), M. Aurière (a2), G. A. Wade (a3), C. Charbonnel (a2) (a4) and N. A. Drake (a5) (a6)...

Abstract

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.

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References

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