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arXiv · 1908.09599

The ExoTETHyS package: Tools for Exoplanetary Transits around Host Stars

Giuseppe Morello·Antonio Claret·Marine Martin-Lagarde·Christophe Cossou·Angelos Tsiaras·Pierre-Olivier Lagage
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Abstract

We present here the first release of the open-source python package ExoTETHyS, which aims to provide a stand-alone set of tools for modeling spectro-photometric observations of the transiting exoplanets. In particular, we describe: (1) a new calculator of stellar limb-darkening coefficients that outperforms the existing software by one order of magnitude in terms of light-curve model accuracy, i.e., down to <10 parts per million (ppm); (2) an exact transit light-curve generator based on the entire stellar intensity profile rather than limb-darkening coefficients. New tools will be added in later releases to model various effects in exoplanetary transits and eclipsing binaries. ExoTETHyS is a reference package for high-precision exoplanet atmospheric spectroscopy with the upcoming JWST and ARIEL missions.

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Giuseppe Morello, Antonio Claret, Marine Martin-Lagarde, Christophe Cossou, Angelos Tsiaras, Pierre-Olivier Lagage. 2019-08-26. The ExoTETHyS package: Tools for Exoplanetary Transits around Host Stars. https://doi.org/10.3847/1538-3881/ab63dc

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