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

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

doi:10.1017/S1743921314002506

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

Solar and Stellar Astrophysics 2015-06-17 v1

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

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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 H?_alpha, 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.

Keywords

magnetic field structure late-type giant Zeeman Doppler Imaging chromospheric activity stellar evolutionary models core Helium-burning

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@article{arxiv.1310.8083,
  title  = {Magnetic Field Structure and Activity of the He-burning Giant 37 Comae},
  author = {S. Tsvetkova and P. Petit and R. Konstantinova-Antova and M. Aurière and G. A. Wade and C. Charbonnel and N. A. Drake},
  journal= {arXiv preprint arXiv:1310.8083},
  year   = {2015}
}

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2 pages, 1 figure, Proceedings IAU Symposium 2013

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

Abstract

Keywords

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