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The Hertzsprung-gap giant 31 Comae in 2013: Magnetic field and activity indicators

Published online by Cambridge University Press:  07 August 2014

Ana P. Borisova ,
Renada Konstantinova-Antova ,
Michel Aurière ,
Pascal Petit  and
Corinne Charbonnel
Ana P. Borisova
Affiliation:
Institute of Astronomy and NAO, Bulgarian Academy of Sciences 72 Tsarigradsko shosse blvd., BG-1784, Sofia, Bulgaria email: [email protected]
Renada Konstantinova-Antova
Affiliation:
Institute of Astronomy and NAO, Bulgarian Academy of Sciences 72 Tsarigradsko shosse blvd., BG-1784, Sofia, Bulgaria email: [email protected] Institut de Recherche en Astrophysique et Plantologie, CNRS, Universitè de Toulouse, France
Michel Aurière
Affiliation:
Institut de Recherche en Astrophysique et Plantologie, CNRS, Universitè de Toulouse, France
Pascal Petit
Affiliation:
Institut de Recherche en Astrophysique et Plantologie, CNRS, Universitè de Toulouse, France
Corinne Charbonnel
Affiliation:
Institut de Recherche en Astrophysique et Plantologie, CNRS, Universitè de Toulouse, France Universitè de Genève, Switzerland
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Abstract

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We have observed the giant star 31 Comae in April and May 2013 with the spectropolarimeter Narval at Pic du Midi Observatory, France. 31 Comae is a single, rapidly rotating giant with rotational period ~6.8 d and vsini ~ 67 km/s. We present measurements and discuss variability of the longitudinal magnetic field (Bl), spectral activity indicators Hα, CaII H&K, Ca II IR triplet and evolutionary status. Our future aim is to perform a Zeeman-Doppler imaging study for the star.

Keywords

Stars: activityStars: individual: 31 ComaeStars: magnetic fields
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 9 , Symposium S302: Magnetic Fields throughout Stellar Evolution , August 2013 , pp. 365 - 366
Copyright
Copyright © International Astronomical Union 2014 

References

Bounatiro, L. 1993, A&AS, 100, 53Google Scholar
Donati, J.-F.et al. 1997, MNRAS, 291, 658Google Scholar
Gondoin, P. 2005, A&A, 444, 531Google Scholar
Gray, R. O.et al. 2001, AJ, 121, 2148Google Scholar
Korhonen, et al. 2009, MNRAS, 395, 282Google Scholar
Rees, D. E. & Semel, M. D. 1979, A&A, 74, 1Google Scholar
Strassmeier, K. G.et al. 1990, ApJS, 72, 191Google Scholar
Strassmeier, K. G.et al. 2010, A&A, 520, A52Google Scholar
Wade, G.et al. 2000, MNRAS, 313, 823CrossRefGoogle Scholar