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- W1977609038 abstract "On the Sun, magnetic activity is essentially restricted to latitudes within 45° of the equator. However, active stars, such as RS CVn systems, and T Tauri stars generally show polar activity. I model the evolution of a toroidal magnetic flux tube as it rises from the base of the convection zone in various lower main-sequence stars and show that, on the main sequence, polar activity is more likely for less massive stars. For example, a 1 M☉ star must rotate with ω > 5 ω☉ in order to develop significant polar magnetic flux, while a 0.4 M☉ star will generate predominantly polar flux for ω > 0.5 ω☉. This leads to the expectation that essentially all M stars should display polar, rather than equatorial, magnetic activity. A similar effect is expected for RS CVn and T Tauri systems, and for giant stars." @default.
- W1977609038 created "2016-06-24" @default.
- W1977609038 creator A5077606112 @default.
- W1977609038 date "1997-08-01" @default.
- W1977609038 modified "2023-10-17" @default.
- W1977609038 title "Polar Magnetic Activity and Spin‐down on the Lower Main Sequence" @default.
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- W1977609038 doi "https://doi.org/10.1086/304374" @default.
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