Monitoring Of The Magnetic Field Topology And Activity Of The Core Helium-Burning Giant Beta Ceti In The Period 2010-2013
Creators: name: Tsvetkova, Svetla
name: Petit, Pascal
name: Konstantinova-Antova, Renada
name: Aurière, Michel
name: Wade, Gregg A.
name: Charbonnel, Corinne
name: Bogdanovski, Rumen
name: Borisova, Ana
Publisher: name: Zenodo
Year: 2016
Subjects: cool
stars
magnetic field
Zeeman Doppler imaging

description: Beta Ceti is a slowly rotating (v sin i = 3.5 kms−1) single giant. In our previous study (Tsvetkova et al. (2013)) we showed that it is in the core He-burning phase and we reconstructed two Zeeman Doppler imaging (ZDI) maps (using data from 2010 and 2011) revealing a simple large-scale magnetic field structure. We concluded that the magnetic field of beta Ceti could have a fossil field origin. In addition, the study of Aurière et al. (2015) about the properties and origin of the magnetism of late-type giants, where beta Ceti was a member of that sample, revealed that this star did not follow the general trends for dynamo-generated magnetic fields. Now, we present a new ZDI map of beta Ceti and compare the new results with our previous study. This monitoring for several years of the magnetic field topology and line activity indicators variability supports our previous conclusion about the fossil field origin of the magnetic field of beta Ceti.
description: Poster #212E
description: {"references": ["Auri\u00e8re, M. 2003, In EAS Publications Series, edited by J. Arnaud &amp; N. Meunier, EAS Publications Series, vol. 9, p. 105", "Auri\u00e8re, M., Konstantinova-Antova, R., Charbonnel, C., Wade, G. A., Tsvetkova, S., et al. 2015, A&amp;A, 574, A90", "Ayres, T. R., Osten, R. A., &amp; Brown, A. 2001, ApJL, 562, L83", "Claret, A. &amp; Bloemen, S. 2011, A&amp;A, 529, A75", "Donati, J.-F. &amp; Brown, S. F. 1997, A&amp;A, 326, 1135", "Donati, J.-F., Catala, C., Landstreet, J. D., &amp; Petit, P. 2006a, In Astronomical Society of the Pacific Conference Series, edited by R. Casini &amp; B. W. Lites, Astronomical Society of the Pacific Conference Series, vol. 358, p. 362", "Donati, J.-F., Howarth, I. D., Jardine, M. M., Petit, P., Catala, C., et al. 2006b, MNRAS, 370, 629", "Donati, J.-F., Semel, M., Carter, B. D., Rees, D. E., &amp; Collier Cameron, A. 1997, MNRAS, 291, 658", "Eriksson, K., Linsky, J. L., &amp; Simon, T. 1983, ApJ, 272, 665", "H\u00fcnsch, M., Schmitt, J. H. M. M., Schr\u00f6der, K.-P., &amp; Reimers, D. 1996, A&amp;A, 310, 801", "Landstreet, J. D. &amp; Mathys, G. 2000, A&amp;A, 359, 213", "Maggio, A., Favata, F., Peres, G., &amp; Sciortino, S. 1998, A&amp;A, 330, 139", "Morin, J., Donati, J.-F., Petit, P., Delfosse, X., Forveille, T., et al. 2008, MNRAS, 390, 567", "Petit, P., Ligni\u00e8res, F., Wade, G. A., Auri\u00e8re, M., B\u00f6hm, T., et al. 2010, A&amp;A, 523, A41", "Rees, D. E. &amp; Semel, M. D. 1979, A&amp;A, 74, 1", "Semel, M. 1989, A&amp;A, 225, 456", "Semel, M., Donati, J.-F., &amp; Rees, D. E. 1993, A&amp;A, 278, 231", "Tsvetkova, S., Petit, P., Auri\u00e8re, M., Konstantinova-Antova, R., Wade, G. A., et al. 2013, A&amp;A, 556, A43", "Wade, G. A., Donati, J.-F., Landstreet, J. D., &amp; Shorlin, S. L. S. 2000, MNRAS, 313, 851"]}