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How the planetary research helps to the stellar dynamo understanding

Published online by Cambridge University Press:  18 July 2013

I. Boisse ,
M. Oshagh ,
C. Lovis ,
N. C. Santos ,
X. Dumusque ,
X. Bonfils ,
M. Montalto  and
G. Boué
I. Boisse
Affiliation:
Centro de Astrofísica, Universidade do Porto, Rua das Estrelas, 4150-762 Porto, Portugal email: [email protected]
M. Oshagh
Affiliation:
Centro de Astrofísica, Universidade do Porto, Rua das Estrelas, 4150-762 Porto, Portugal email: [email protected] Departamento de Física e Astronomia, Faculdade de Ciâncias, Universidade do Porto, 4169-007 Porto, Portugal
C. Lovis
Affiliation:
Observatoire de Genève, Université de Genève, 51 Ch. des Maillettes, 1290 Sauverny, Switzerland
N. C. Santos
Affiliation:
Centro de Astrofísica, Universidade do Porto, Rua das Estrelas, 4150-762 Porto, Portugal email: [email protected] Departamento de Física e Astronomia, Faculdade de Ciâncias, Universidade do Porto, 4169-007 Porto, Portugal
X. Dumusque
Affiliation:
Departamento de Física e Astronomia, Faculdade de Ciâncias, Universidade do Porto, 4169-007 Porto, Portugal Observatoire de Genève, Université de Genève, 51 Ch. des Maillettes, 1290 Sauverny, Switzerland
X. Bonfils
Affiliation:
UJF-Grenoble1/CNRS-INSU, Institut de Planétologie et d'Astrophysique de Grenoble, UMR 5274, Grenoble, F-38041, France
M. Montalto
Affiliation:
Centro de Astrofísica, Universidade do Porto, Rua das Estrelas, 4150-762 Porto, Portugal email: [email protected]
G. Boué
Affiliation:
Centro de Astrofísica, Universidade do Porto, Rua das Estrelas, 4150-762 Porto, Portugal email: [email protected]
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Abstract

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Most of the exoplanet science is dependent on the stellar knowledge. One of them that has to be understood is the magnetic activity when we search for planets with radial velocity or photometry measurements. The main shape of stellar activity and spots properties have to be understood, for example, to choose the best targets to search for low-mass planets in the habitable zone or to derive the accurate parameters of a planetary system. With that aim, we show in this presentation how these studies lead to give clues on spots latitudes and on the long term variation of stellar activity. The properties of magnetic activity on the low rotators solar-type stars are not easily reachable by other techniques (spectropolarimetry or Doppler imaging) and these studies should be used to constrain theories of stellar dynamo.

Keywords

Techniques: radial velocitiesphotometryStars: activityDynamoPlanetary system
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S294: Solar and Astrophysical Dynamos and Magnetic Activity , August 2012 , pp. 471 - 475
Copyright
Copyright © International Astronomical Union 2013 

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