The ExoTETHyS Package: Tools for Exoplanetary Transits around Host Stars
Abstract
We 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.
- Publication:
-
The Astronomical Journal
- Pub Date:
- February 2020
- DOI:
- 10.3847/1538-3881/ab63dc
- arXiv:
- arXiv:1908.09599
- Bibcode:
- 2020AJ....159...75M
- Keywords:
-
- Observational astronomy;
- Spectroscopy;
- High time resolution astrophysics;
- Exoplanet atmospheres;
- Stellar atmospheres;
- Transit photometry;
- Eclipsing binary stars;
- Exoplanet systems;
- Stellar astronomy;
- Limb darkening;
- 1145;
- 1558;
- 740;
- 487;
- 1584;
- 1709;
- 444;
- 484;
- 1583;
- 922;
- Astrophysics - Earth and Planetary Astrophysics;
- Astrophysics - Instrumentation and Methods for Astrophysics;
- Astrophysics - Solar and Stellar Astrophysics
- E-Print:
- published on the AJ