Atmospheric Library of Far Away Worlds

Interpretation of observations of exoplanet atmospheres require atmospheric models. We have developed an extensive public library of simulated transmission spectra, emission spectra, chemistry and P-T profiles for more than 100 exoplanets (https://bd-server.astro.ex.ac.uk/exoplanets/). First part of the library published in Goyal et al. 2017 has been utilised to interpret the observations of various exoplanets (see for example Wakeford et al. 2018) and JWST cycle 1 proposals. The second part of the library in also under preparation. I will talk about the effect of different physical parameters like Temperature, Metallicity, Carbon to Oxygen (C/O) ratio, Clouds and Haze on the spectral signatures of these planets and various atmospheric transition regimes. I will show exciting predictions for a range of exoplanetary atmospheres and the applicability of the library to constrain their Pressure-Temperature structure, Metallicity, C/O ratio and Cloud properties using JWST. I will talk about the possibility of detecting HCN features in many of these planets and its potential to constrain their overall atmospheric metallicity. I will also show how H2S features can reveal the dominant vertical transport process in these atmospheres, which can either be efficient lofting or efficient sedimentation.

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