| Issue |
A&A
Volume 440, Number 1, September II 2005
|
|
|---|---|---|
| Page(s) | L9 - L12 | |
| Section | Letters | |
| DOI | https://doi.org/10.1051/0004-6361:200500156 | |
| Published online | 19 August 2005 | |
Letter to the Editor
Stellar evolution with rotation and magnetic fields
IV. The solar rotation profile
Observatoire de Genève, 51 chemin de Maillettes, 1290 Sauverny, Switzerland e-mail: Patrick.Eggenberger@obs.unige.ch
Received:
2
June
2005
Accepted:
16
July
2005
We examine the generation of a magnetic field in a solar-like star and its effects on the internal
distribution of the angular velocity. We suggest that the evolution of a rotating star with magnetic fields
leads to an equilibrium value of the differential rotation. This equilibrium is determined by the magnetic
coupling, which favours a constant rotation profile, and meridional circulation which tends to build
differential rotation. The global equilibrium stage is close to solid body rotation
between about 0.7 and 0.2 
, in good agreement with helioseismic measurements.
Key words: stars: rotation / stars: magnetic fields / stars: evolution
© ESO, 2005
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