The Major Role of Minor Condensates in Metal-Rich Exoplanetary Atmospheres

Astronomy and Astrophysics – Astronomy

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Scientific paper

The formation of clouds in exoplanet atmospheres significantly changes their observable properties. Published models of warm planetary atmospheres have included the most important condensates expected to be found in observed exoplanets, which are iron clouds and silicate clouds. However, these are not the only condensates expected to form at these temperatures and pressures. I will present results from a series of 1D models of planetary atmospheres that include not only iron and silicate clouds, but also collections of condensates that have previously been ignored. These clouds will include condensates such as potassium chloride, chromium, manganese sulfide, sodium sulfide, and zinc sulfide. These clouds should be most prominent at low surface gravity, strongly super-solar atmospheric abundances, and at the slant viewing geometry appropriate for transits. Observational implications for transmission spectra of transiting planets and direct imaging observations of young Jupiters will be presented.

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