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Recent Advances in the Observation and Analysis of Stellar Magnetic Fields

Published online by Cambridge University Press:  12 April 2016

Steven Saar
Steven Saar*
Affiliation:
Harvard-Smithsonian Center for Astrophysics, 60 Garden Street MS 58 Cambridge, MA 02138, USA

Abstract

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There has been considerable progress recently in the study of magnetic fields on late-type stars. Advances in the theory include investigation of systematic effects, new and improved methods of analysis for unpolarized and circularly polarized lines, new models of stellar dynamos and of broadband linear polarization, and the first studies of the thermodynamic nature of stellar magnetic regions and their vertical structure. Observationally, there have been new measurements, particularly of young and active stars (including the first detection of a field on a pre-main sequence object), a new monitoring campaign, the first indications of the relative temperatures in stellar plages, and the first measurements of fields in a single stellar active region. I discuss the results in the framework of stellar activity and surface structure.

Type
Part IV Stellar activity
Information
International Astronomical Union Colloquium , Volume 130: The Sun and Cool Stars: activity, magnetism, dynamos , 1991 , pp. 389 - 400
Copyright
Copyright © Springer-Verlag 1991

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