Estimating photoevaporative mass loss of exoplanets with PLATYPOS

We develop PLATYPOS (PLAneTarY PhOtoevaporation Simulator), a python code to perform planetary photoevaporative mass-loss calculations for close-in planets with hydrogen-helium envelopes atop Earth-like rocky cores. With physical and model parameters as input, calculates the atmospheric mass loss it radius evolution of planet over time, taking into account also thermal cooling subsequent planet. In particular, we implement different stellar activity tracks time. Our setup allows prediction whether can hold on significant fraction its atmosphere, or fully evaporates, leaving behind only bare core. The user supplies information about star-planet system interest, which includes host star parameters, well star's rotational thus evolution. addition, several details evaporative rate estimation be chosen. This effective absorption cross-section high energy photons, evaporation efficiency, hydrodynamic escape model.