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Sun-like Stars: magnetic fields, cycles and exoplanets

Published online by Cambridge University Press:  27 October 2016

Rim Fares
Rim Fares*
Affiliation:
INAF - Osservatorio Astrofisico di Catania, Via Santa Sofia 78, 95123 Catania, Italy email: [email protected]
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Abstract

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In Sun-like stars, magnetic fields are generated in the outer convective layers. They shape the stellar environment, from the photosphere to planetary orbits. Studying the large-scale magnetic field of those stars enlightens our understanding of the field properties and gives us observational constraints for field generation dynamo models. It also sheds light on how “normal” the Sun is among Sun-like stars. In this contribution, I will review the field properties of Sun-like stars, focusing on solar twins and planet hosting stars. I will discuss the observed large-scale magnetic cycles, compare them to stellar activity cycles, and link that to what we know about the Sun. I will also discuss the effect of large-scale stellar fields on exoplanets, exoplanetary emissions (e.g. radio), and habitability.

Keywords

stars: magnetic fieldsstars: activitytechnique: polarimetry
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 11 , General Assembly A29A: Astronomy in Focus , August 2015 , pp. 360 - 364
Copyright
Copyright © International Astronomical Union 2016 

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