| Structure and Evolution of Low-Mass Stars (2007) | |||||||||||||
Abstract | |||||||||||||
| . We present extensive calculations of the structure and the evolution of low-mass stars in the range 0.070. 8 M fi , for metallicities \Gamma2:0 [M=H] 0:0. These calculations are based on the most recent description of the microphysics characteristic of these dense and cool objects and on the lattest generation of grainless non-grey atmosphere models. We examine the evolution of the different mechanical and thermal properties of these objects as a function of mass and metallicity. We also demonstrate the inaccuracy of grey models and T (ΓΈ ) relationships under these conditions. We provide detailed tables of the mass-radius-luminosity-effective temperature relations for various ages and metallicities, aimed at calibrating existing or future observations of low-mass stars and massive brown dwarfs. We derive new hydrogen-burning minimum masses, within the afore-mentioned metallicity range. These minimum masses are found to be smaller than previous estimates, a direct consequence of non... | |||||||||||||
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