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The ExoTETHyS Package: Tools for Exoplanetary Transits around Host Stars

AuthorsMorello, G.; Claret dos Santos, Antonio ; Martin-Lagarde, M.; Cossou, C.; Tsiaras, A.; Lagage, P. O.
KeywordsObservational astronomy
High time resolution astrophysics
Exoplanet atmospheres
Stellar atmospheres
Transit photometry
Eclipsing binary stars
Exoplanet systems
Stellar astronomy
Limb darkening
Issue Date2020
PublisherIOP Publishing
CitationAstronomical Journal 159(2): A75
AbstractWe present here the first release of the open-source python package ExoTETHyS (stable: https://zenodo.org/badge/latestdoi/169268509, development version: https://github.com/ucl-exoplanets/ExoTETHyS/), which aims to provide a stand-alone set of tools for modeling spectrophotometric observations of 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, and (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 James Webb Space Telescope and Atmospheric Remote-sensing Infrared Exoplanet Large-survey missions.
Publisher version (URL)http://dx.doi.org/10.3847/1538-3881/ab63dc
Appears in Collections:(IAA) Artículos
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