A New Generation of Solar Metallicity Stellar Models

Physics

Scientific paper

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Scientific paper

The calculation of highly accurate stellar atmospheres and envelopes can be very resource intensive when millions of stellar models must be computed (e.g. population syntheses or binary mass loss). Since the outer layers require most of the CPU cycles needed to calculate a single stellar model, it is more efficient to compute a grid of outer boundary conditions a priori and then to interpolate this archived data when computing actual evolutionary tracks. Using the most sophisticated input physics (e.g. OPAL opacities, Alexander and Ferguson low-temperature opacities, SCVH equation of state, Allard and Hauschildt non-gray atmospheres) we have calculated the outer boundary conditions for a wide range of masses (0.01 to 10 solar masses) and luminosities. We use these in conjunction with the same physical inputs in the interior to calculate the observed properties of various stellar models. In particular, we present the latest generation of models with masses near the end of the main sequence or in the brown dwarf range. All of the data is being made available for download on the Web server at physics.ubishops.ca/bc.

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