Influence of Gravity Waves on the Internal Rotation and Li Abundance of Solar-Type Stars
Corinne Charbonnel1 and
Suzanne Talon2*
The Sun's rotation profile and lithium content have been difficult
to understand in the context of conventional models of stellar
evolution. Classical hydrodynamic models predict that the solar
interior must rotate highly differentially, in disagreement
with observations. It has recently been shown that internal
waves produced by convection in solar-type stars produce an
asymmetric, shear layer oscillation, similar to Earth's quasi-biennial
oscillation, that leads to efficient angular momentum redistribution
from the core to the envelope. We present results of a model
that successfully reproduces both the rotation profile and the
surface abundance of lithium in solar-type stars of various
ages.
2 Dèpartement de Physique, Universitè de Montrèal, Montrèal, PQ H3C 3J7, Canada.
* To whom correspondence should be addressed. E-mail: talon{at}astro.umontreal.ca
