On the efficient computation of sequences of solar models

Details On the efficient computation of sequences of solar models On the efficient computation of sequences of solar models

Aug 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976apj...208..224n&link_type=abstract

Astrophysical Journal, vol. 208, Aug. 15, 1976, pt. 1, p. 224-227.

Physics

Computerized Simulation, Nuclear Fusion, Solar Atmosphere, Solar Simulation, Stellar Evolution, Stellar Models, Abundance, Astronomical Models, Atmospheric Models, Hydrogen, Sequential Analysis, Solar Physics

Scientific paper

The approach described was used to modify a standard Henyey-type stellar evolution computer code to become a structure code for the generation of sequences of solar models by parameter variation. A distinctive feature of the approach is that it avoids recalculation of full evolutionary sequences by using the hydrogen-abundance profile of a standard evolved model to approximate the composition profile of other models in the sequence. It is shown how a sequence of solar models of given age can be obtained by calculating just one full evolutionary sequence, then varying the parameter of interest and adjusting the composition structure to recover solar conditions in a way that the age of the model is maintained. The approximation involved in the approach is shown to be satisfactory for most applications.

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