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Improved solar models constructed with a formulation of convection for stellar structure and evolution calculations without the mixing-length theory approximationsWe have updated a previous attempt to incorporate within a solar model a treatment of convection based upon numerical simulations of convection rather than mixing-length theory (MLT). We have modified our formulation of convection for a better treatment of the kinetic energy flux. Our solar model has been updated to include a complete range of OPAL opacities, the Debye-Hueckel correction to the equation of state, helium diffusion due to gravitational settling, and atmospheres by Kurucz. We construct a series of models using both MLT and our revised formulation of convection and the compared results to measurements of the solar radius, the solar luminosity, and the depth of the solar convection zone as inferred from helioseismology. We find X(solar) = 0.702 +/- 0.005, Y(solar) = 0.278 +/- 0.005, and Z(solar) = 0.0193 +/- 0.0005.
Document ID
19930040673
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Lydon, Thomas J.
(Center for Solar and Space Research New Haven, CT, United States)
Fox, Peter A.
(High Altitude Observatory Boulder, CO, United States)
Sofia, Sabatino
(Center for Solar and Space Research New Haven, CT, United States)
Date Acquired
August 16, 2013
Publication Date
February 1, 1993
Publication Information
Publication: Astrophysical Journal, Part 2 - Letters
Volume: 403
Issue: 2
ISSN: 0004-637X
Subject Category
Solar Physics
Accession Number
93A24670
Funding Number(s)
CONTRACT_GRANT: NGT-50651
Distribution Limits
Public
Copyright
Other

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