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Inhomogeneities in Wolf-Rayet atmospheres
Published online by Cambridge University Press: 25 May 2016
Extract
By progress in both computer-speed and the development of efficient solution algorithms (Accelerated Lambda Iteration, ALI) nowadays detailed models for Wolf-Rayet atmospheres can be calculated on a desktop computer. In recent years much work was focused on the correct treatment of all relevant opacities, with the success that now hundreds of atomic levels and thousands of spectral lines of light elements (e.g., He, C, N, O) and millions of Fe lines can be accounted for in non-LTE. With respect to the opacities, these new models are complete but they are all based on the standard assumptions for WR atmospheres, namely spherically-symmetric expansion and stationarity and homogeneity of the outflow (cf. Hamann et al. these Proceedings).
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- Part 2. Models for single star evolution of massive stars: wind + atmosphere + interior
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- Copyright © Astronomical Society of the Pacific 1999