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Combining magnetic and seismic studies to constrain processes in massive stars

Published online by Cambridge University Press:  07 August 2014

Coralie Neiner ,
Pieter Degroote ,
Blanche Coste ,
Maryline Briquet  and
Stéphane Mathis
Coralie Neiner
Affiliation:
LESIA, UMR 8109 du CNRS, Observatoire de Paris, UPMC, Univ. Paris Diderot, 5 place Jules Janssen, 92195 Meudon Cedex, France email: coralie.neiner@obspm.fr
Pieter Degroote
Affiliation:
LESIA, UMR 8109 du CNRS, Observatoire de Paris, UPMC, Univ. Paris Diderot, 5 place Jules Janssen, 92195 Meudon Cedex, France email: coralie.neiner@obspm.fr Instituut voor Sterrenkunde, Celestijnenlaan 200D, B-3001 Heverlee, Belgium
Blanche Coste
Affiliation:
LESIA, UMR 8109 du CNRS, Observatoire de Paris, UPMC, Univ. Paris Diderot, 5 place Jules Janssen, 92195 Meudon Cedex, France email: coralie.neiner@obspm.fr
Maryline Briquet
Affiliation:
Institut d'Astrophysique et de Géophysique, Université de Liège, Allée du 6 Août 17, Bât B5c, 4000 Liège, Belgium
Stéphane Mathis
Affiliation:
LESIA, UMR 8109 du CNRS, Observatoire de Paris, UPMC, Univ. Paris Diderot, 5 place Jules Janssen, 92195 Meudon Cedex, France email: coralie.neiner@obspm.fr Laboratoire AIM Paris-Saclay, CEA/DSM-CNRS-Université Paris Diderot; IRFU/SAp, Centre de Saclay, 91191 Gif-sur-Yvette Cedex, France
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Abstract

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The presence of pulsations influences the local parameters at the surface of massive stars and thus it modifies the Zeeman magnetic signatures. Therefore it makes the characterisation of a magnetic field in pulsating stars more difficult and the characterisation of pulsations is thus required for the study of magnetic massive stars. Conversely, the presence of a magnetic field can inhibit differential rotation and mixing in massive stars and thus provides important constraints for seismic modelling based on pulsation studies. As a consequence, it is necessary to combine spectropolarimetric and seismic studies for all massive classical pulsators. Below we show examples of such combined studies and the interplay between physical processes.

Keywords

stars: early-typestars: magnetic fieldsstars: oscillations (including pulsations)
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 9 , Symposium S302: Magnetic Fields throughout Stellar Evolution , August 2013 , pp. 302 - 303
Copyright
Copyright © International Astronomical Union 2014 

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