Iraclis

Analysis pipeline for HST/WFC3 spectroscopic observations of exoplanet transits and eclipses

A complete package to analyse single-object spatially scanned spectroscopic observations of extrasolar planets obtained with the near-infrared grisms (G102, G141) of the Wide Field Camera 3 on-board the Hubble Space Telescope.

Includes:

• Reduction of the raw frames.
• Calibration of the position of the total spectrum and the different spectral elements.
• Extraction of the total flux and the flux per spectral element.
• Fitting of the white and the spectral light-curves.

Currently, fitting can be applied only on single-visit light-curves but in the next version it will be updated to fit also multiple visits of the same target simultaneously.

References

• Tsiaras et al. 2016a, A New Approach to Analyzing HST Spatial Scans: The Transmission Spectrum of HD 209458 b, ApJ, 832, 202.

• Tsiaras et al. 2016b, Detection of an Atmosphere Around the Super-Earth 55 Cancri e, ApJ, 820, 99.

• Tsiaras et al. 2018, A Population Study of Gaseous Exoplanets, AJ, 155, 156.

Installation

Open a terminal and type: pip install iraclis

Or download, unzip, cd in the unzipped directory, and type: python setup.py install

You will find a test dataset, including instructions on how to use the pipeline here (62.3 MB): https://www.dropbox.com/s/l3jcz8dzmw5mwg6/iraclis_test_dataset_hatp26b.zip?dl=0

For any issues please send an E-mail at: atsiaras@star.ucl.ac.uk