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Closed and Open Magnetic Fields in Stellar Atmospheres: Effects on Mass Loss from Cool Giant Stars

Published online by Cambridge University Press:  04 August 2017

D. J. Mullan
D. J. Mullan*
Affiliation:
Bartol Research Foundation of the Franklin Institute University of Delaware, Newark, Delaware 19711, USA

Abstract

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We propose that the onset of rapid mass loss among cool giants, and the absence of hot coronal material from their atmospheres, is associated with a transition in the large-scale magnetic topology of the atmosphere from closed to open. According to this view, field loops in the atmospheres of giants of spectral class K and later cannot find equilibrium, but are in a state of dynamical evolution throughout their lifetime in the atmosphere.

Type
V. Stellar Winds and Spindown in Late — Type Stars
Information
Symposium - International Astronomical Union , Volume 102: Solar and Stellar Magnetic Fields: Origins and Coronal Effects , 1983 , pp. 487 - 491
Copyright
Copyright © Reidel 1983 

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