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Magnetised winds of low-mass stars and their impact on exoplanets

Published online by Cambridge University Press:  06 January 2014

A. A. Vidotto
A. A. Vidotto*
Affiliation:
SUPA, University of St Andrews, North Haugh, KY16 9SS, UK email: Aline.Vidotto@st-andrews.ac.uk
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Abstract

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The proper characterisation of stellar winds is crucial to constrain interactions between exoplanets and their surrounding environments and also essential for the study of space weather events on exoplanets. Although the great majority of exoplanets discovered so far are orbiting cool, low-mass stars with properties (mass, radius and effective temperatures) similar to solar, the stellar magnetism can be significantly different from the solar one, both in topology and intensity. Due to the current technology used in exoplanetary searches, most of the currently known exoplanets are found orbiting at extremely close distances to their host stars (< 0.1 au). The dramatic differences in stellar magnetism and orbital radius can make the interplanetary medium of exoplanetary systems remarkably distinct from the one present in the solar system. In addition, the interaction of the stellar winds with exoplanets can lead, among others, to observable signatures that are absent in our own solar system.

Keywords

MHDstars: coronaestars: late-typestars: magnetic fieldsstars: mass lossstars: planetary systemsstars: windsoutflows
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S300: Nature of Prominences and their role in Space Weather , June 2013 , pp. 322 - 329
Copyright
Copyright © International Astronomical Union 2013 

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