Influence of Gravity Waves on the Internal Rotation and Li Abundance of Solar-Type Stars

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 s...

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Bibliographic Details
Published in:Science (American Association for the Advancement of Science) 2005-09, Vol.309 (5744), p.2189-2191
Main Authors: Charbonnel, Corinne, Talon, Suzanne
Format: Article
Language:English
Subjects:
Analysis
Angular momentum
Astronomy
Braking
Earth, ocean, space
Exact sciences and technology
Lithium
Motion
Orbits
Profiles
Rotation
Rotation (Motion)
Rotational motion
Solar evolution
Solar rotation
Stars
Stars & galaxies
Stellar characteristics and properties
Stellar evolution
Stellar rotation
Sun
Testing
Velocity
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Summary: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.
ISSN:0036-8075
1095-9203
DOI:10.1126/science.1116849