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Observational methods for stellar magnetism: from detection to cartography

Published online by Cambridge University Press:  18 July 2013

Klaus G. Strassmeier ,
Thorsten A. Carroll ,
Ilya Ilyin  and
Silva Järvinen
Klaus G. Strassmeier
Affiliation:
Leibniz-Institute for Astrophysics Potsdam (AIP) An der Sternwarte 16, D-14482 Potsdam, Germany email: [email protected], [email protected], [email protected], [email protected]
Thorsten A. Carroll
Affiliation:
Leibniz-Institute for Astrophysics Potsdam (AIP) An der Sternwarte 16, D-14482 Potsdam, Germany email: [email protected], [email protected], [email protected], [email protected]
Ilya Ilyin
Affiliation:
Leibniz-Institute for Astrophysics Potsdam (AIP) An der Sternwarte 16, D-14482 Potsdam, Germany email: [email protected], [email protected], [email protected], [email protected]
Silva Järvinen
Affiliation:
Leibniz-Institute for Astrophysics Potsdam (AIP) An der Sternwarte 16, D-14482 Potsdam, Germany email: [email protected], [email protected], [email protected], [email protected]
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Abstract

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We review some of the currently used techniques to detect stellar magnetic fields on cool stars. Emphasis is put on spectropolarimetry with high-resolution spectrographs and its related data de-noising techniques and multi-line inverse modeling. Detections and results from Zeeman splittings and broadenings are briefly mentioned. We discuss some of our most recent Zeeman Doppler Imaging (ZDI) results and present a comparison of ZDI maps of the K-type WTTS V410 Tauri and the planet-hosting F8 star HD 179949 with results from other groups.

Keywords

Magnetic fieldspolarizationstars: activitystars: rotationstars: spotsSun: rotationinstrumentation: polarimetersinstrumentation: spectrographs
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S294: Solar and Astrophysical Dynamos and Magnetic Activity , August 2012 , pp. 447 - 458
Copyright
Copyright © International Astronomical Union 2013 

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