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The Variability of Stellar Magnetic Flux, Related Surface Structures and Activity

Published online by Cambridge University Press:  12 April 2016

Steven H. Saar
Steven H. Saar*
Affiliation:
Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138, USA

Abstract

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I review information from a variety of sources, including magnetic field measurements, Doppler imaging, and various photometric and spectroscopic survey and monitoring programs for clues concerning the physical properties, spatial structure, variability and evolution of magnetic regions and associated activity on cool stars. Based on these data, I sketch a scenario of what the surfaces of cool stars look like as a function of spectral type and age/rotation/activity level.

Type
Variability of Solar and Stellar Irradiance Related to the Network, Active Regions (Sunspots and Plages), and Large-Scale Magnetic Structures
Information
International Astronomical Union Colloquium , Volume 143: The Sun as a Variable Star: Solar and Stellar Irradiance Variations , 1994 , pp. 147 - 158
Copyright
Copyright © Kluwer 1994

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