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The Boundary between the Magnetic Fields of Ap Stars and the Fields of Solar-type Stars
Published online by Cambridge University Press: 12 April 2016
Abstract
The boundary between Ap-type magnetic fields and the magnetic fields of solar-type stars occurs near Te ~ 7000K, about where deep envelope convection develops in main sequence stars. This seems natural for solar-type stars, in which the field is generated by the convection zone. However, among magnetic Ap stars the frequency of occurrence declines from about 10% of all A stars near A0 to about 1% near F0. It is not clear what produces this decline in frequency, but the convection zone is probably not responsible. In fact, it seems likely that if global fossil fields occur in main sequence F stars, such fields should be detectable even if the stars having them are not chemically peculiar.
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- Part IV Stellar activity
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- Copyright © Springer-Verlag 1991