Dynamical processes in stellar radiation zones

Details Dynamical processes in stellar radiation zones Dynamical processes in stellar radiation zones

Aug 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006iaujd..17e..18m&link_type=abstract

Highlights of Recent Progress in the Seismology of the Sun and Sun-Like Stars, 26th meeting of the IAU, Joint Discussion 17, 23

Physics

Scientific paper

With the progress of asteroseismology, we need a coherent picture of the evolution of rotating stars from their birth to their death. We describe here the modelling of the macroscopic transport of matter and angular momentum in stellar interiors that we have undertaken to achieve this goal. First, we briefly recall the dynamical processes that are driving these mechanisms in rotating stars. Then, we present our new results of numerical simulations which allow us to follow in 2D the secular hydrodynamics of rotating stars, assuming that anisotropic turbulence enforces a cellular rotation law. We discuss the different processes such as MHD instabilities that should be studied in the next future to improve our description of dynamical processes in stellar radiation zones. Finally, we show how our new results are leading us to a dynamical vision of Hertzsprung-Russell diagram, in support of asteroseismology.

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