Introduction

ExoCTK is an open-source, modular data analysis package focused primarily on atmospheric characterization of exoplanets. The subpackages included are:

• Contamination and Visibility Calculator

• Integrations and Groups Calculator

• Transit Light-Curve Fitter

• Limb Darkening Calculator

• Phase Constraint Calculator

• Atmospheric Forward Modeling

For more information on each package visit our documentation at readthedocs.

Most packages are also available through interactive tools at our web portal.

Installation

The following are instructions on how to install the exoctk package for both users and contributors. The exoctk repository provides a conda environment containing all of the dependencies needed to install and execute the exoctk software.

git clone https://github.com/ExoCTK/exoctk.git
cd exoctk

conda env create -f exoctk-env.yml

conda activate exoctk-env

pip install -e .

export EXOCTK_DATA='/path/to/your/unzipped/directory/exoctk_data/'

Citation

If you use ExoCTK for work/research presented in a publication (whether directly, or as a dependency to another package), we recommend and encourage the following acknowledgment:

This research made use of the open source Python package exoctk, the Exoplanet Characterization Toolkit (Bourque et al, 2021).

where (Bourque et al, 2021) is a citation of the Zenodo record, e.g.:

@software{matthew_bourque_2021_4556063,
  author       = {Matthew Bourque and
                  Néstor Espinoza and
                  Joseph Filippazzo and
                  Mees Fix and
                  Teagan King and
                  Catherine Martlin and
                  Jennifer Medina and
                  Natasha Batalha and
                  Michael Fox and
                  Jules Fowler and
                  Jonathan Fraine and
                  Matthew Hill and
                  Nikole Lewis and
                  Kevin Stevenson and
                  Jeff Valenti and
                  Hannah Wakeford},
  title        = {The Exoplanet Characterization Toolkit (ExoCTK)},
  month        = feb,
  year         = 2021,
  publisher    = {Zenodo},
  version      = {1.0.0},
  doi          = {10.5281/zenodo.4556063},
  url          = {https://doi.org/10.5281/zenodo.4556063}
}

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