Abstract
We combine the photometric model of isochrone synthesis recently published by Charlot & Bruzual with an updated library of stellar spectra to predict the spectral evolution of stellar populations with solar metallicity. The library of spectra assembled here supersedes other existing libraries (Bruzual; Guiderdoni & Rocca-Volmerange; Buzzoni) by its spectral range (extreme ultraviolet to far-infrared), its complete coverage of the color-magnitude diagram, and its inclusion of observed near-infrared spectra out to 2.56 μm. Also, the spectra are distributed on the stellar evolutionary tracks using optical/near-infrared color calibrations, as an improvement over models that used a single color of the effective temperature of the stars alone
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