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arXiv · 1310.8083

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
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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.

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S. Tsvetkova, P. Petit, R. Konstantinova-Antova, M. Aurière, G. A. Wade, C. Charbonnel, N. A. Drake. 2013-10-30. Magnetic Field Structure and Activity of the He-burning Giant 37 Comae. https://doi.org/10.1017/s1743921314002506

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