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Magnetic Fields in Low-Mass Stars: An Overview of Observational Biases

Published online by Cambridge University Press:  07 August 2014

Ansgar Reiners
Ansgar Reiners*
Affiliation:
Institut für Astrophysik, Georg-August Universität Göttingen, 37077 Göttingen, Germany email: [email protected]
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Abstract

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Stellar magnetic dynamos are driven by rotation, rapidly rotating stars produce stronger magnetic fields than slowly rotating stars do. The Zeeman effect is the most important indicator of magnetic fields, but Zeeman broadening must be disentangled from other broadening mechanisms, mainly rotation. The relations between rotation and magnetic field generation, between Doppler and Zeeman line broadening, and between rotation, stellar radius, and angular momentum evolution introduce several observational biases that affect our picture of stellar magnetism. In this overview, a few of these relations are explicitly shown, and the currently known distribution of field measurements is presented.

Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 9 , Symposium S302: Magnetic Fields throughout Stellar Evolution , August 2013 , pp. 156 - 163
Copyright
Copyright © International Astronomical Union 2014 

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