Combining Hydrodynamic and Evolution Calculations of Rotating Stars

Details Combining Hydrodynamic and Evolution Calculations of Rotating Stars Combining Hydrodynamic and Evolution Calculations of Rotating Stars

Dec 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996aas...189.8601d&link_type=abstract

American Astronomical Society, 189th AAS Meeting, #86.01; Bulletin of the American Astronomical Society, Vol. 28, p.1389

Astronomy and Astrophysics

Astronomy

Scientific paper

Rotation has two primary effects on stellar evolutionary models: the direct influence on the model structure produced by the rotational terms, and the indirect influence produced by rotational instabilities which redistribute angular momentum and composition inside the model. Using a two dimensional, fully implicit finite difference code, I can follow events on both evolutionary and hydrodynamic timescales, thus allowing the simulation of both effects. However, there are several issues concerning how to integrate the results from hydrodynamic runs into evolutionary runs that must be examined. The schemes I have devised for the integration of the hydrodynamic simulations into evolutionary calculations are outlined, and the positive and negative features summarized. The practical differences among the various schemes are small, and a successful marriage between hydrodynamic and evolution calculations is possible.

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