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Magnetism and activity of planet hosting stars

Published online by Cambridge University Press:  09 September 2016

Jason T. Wright  and
Brendan P. Miller
Jason T. Wright
Affiliation:
Center for Exoplanets and Habitable Worlds and Department of Astronomy and Astrophysics, 525 Davey Laboratory, The Pennsylvania State University, University Park, PA 16802 email: astrowright@gmail.com
Brendan P. Miller
Affiliation:
Department of Chemistry and Physical Sciences, The College of St. Scholastica, Duluth, MN 55811
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Abstract

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The magnetic activity levels of planet host stars may differ from that of stars not known to host planets in several ways. Hot Jupiters may induce activity in their hosts through magnetic interactions, or through tidal interactions by affecting their host's rotation or convection. Measurements of photospheric, chromospheric, or coronal activity might then be abnormally high or low compared to control stars that do not host hot Jupiters, or might be modulated at the planet's orbital period. Such detections are complicated by the small amplitude of the expected signal, by the fact that the signals may be transient, and by the difficulty of constructing control samples due to exoplanet detection biases and the uncertainty of field star ages. We review these issues, and discuss avenues for future progress in the field.

Keywords

stars:activitystars:chromospheresstars:magnetic fields stars:planetary systemsstars:rotationstars:spots
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 11 , Symposium S320: Solar and Stellar Flares and their Effects on Planets , August 2015 , pp. 357 - 366
Copyright
Copyright © International Astronomical Union 2016 

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