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Stellar Activity: Constraints Expected From Space Experiments

Published online by Cambridge University Press:  12 April 2016

Claude Catala
Claude Catala*
Affiliation:
Laboratoire de Recherche Spatiale, Observatoire de Paris, Section de Meudon, 92195 Meudon Principal Cedex, France

Abstract

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Dynamo theory needs to be guided and tested by observations. However, solar observations alone cannot provide sufficient tests of the dynamo models, and constraints obtained from stellar observations are still few, indirect, and poorly related to the properties of dynamos.

This review discusses which parameters must be observed on stars other than the Sun to usefully guide the theoretical efforts and test the resulting models. We show that most of these observables, which characterize the stellar activity phenomena, are accessible only from space, and that space-based experiments are one of the best took to trigger progress in the field of solar and stellar activity in the next few decades.

Type
VII. Activity, a break of spherical symmetry
Information
International Astronomical Union Colloquium , Volume 137: Inside the Stars , 1993 , pp. 634 - 647
Copyright
Copyright © Astronomical Society of the Pacific 1993

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