When exoplanets pass in front of their stars, they imprint a transit signature on the stellar light curve which to date has been assumed to be symmetric in time, owing to the planet being modelled as a circular area occulting the stellar surface. However, this signature might be asymmetric due to different temperature/pressure and/or chemical compositions in the different terminator regions of the transiting planet. catwoman is a Python package that allows to model these asymmetric transit lightcurves, calculating light curves for any radially symmetric stellar limb darkening law, and where planets are modelled as two semi-circles, of different radii, using the integration algorithm developed in Kreidberg (2015) and implemented in the batman library, from which catwoman builds upon.

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References in zbMATH (referenced in 1 article , 1 standard article )

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  1. Kathryn Jones; Néstor Espinoza: catwoman: A transit modelling Python package for asymmetric light curves (2020) not zbMATH