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The TAU transmission code

The TAU code  (M. Hollis et al., Comp. Phys. Comm. 184 (2013)) is a 1D line-by-line radiative transfer code, which is generally applicable for modelling transmission spectra of close-in extrasolar planets. The inputs are the assumed pressure-temperature profile of the planetary atmosphere, the continuum absorption coefficients and the absorption cross-sections for the trace molecular absorbers present in the model, as well as the fundamental system parameters taken from the published literature. The program then calculates the optical path through the planetary atmosphere of the radiation from the host star, and quantifies the absorption due to the modelled composition in a transmission spectrum of transit depth as a function of wavelength. The code is written in C++, parallelised using OpenMP, and is available for public download and use from this page, with full installation and usage instructions. If this resource is used in any published materials, including online, please cite the above paper.



Page last modified on 16 sep 13 15:23 by Morgan D Hollis