Sulphur chemistry in hot and warm Jupiter atmospheres

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Earth and Planetary Astrophysics

Chemical Physics

Sulphur chemistry in hot and warm Jupiter atmospheres

Sulfur Chemistry in the Atmospheres of Warm and Hot Jupiters

We present and validate a new network of atmospheric thermo-chemical and photo-chemical sulfur reactions as part of a broader hcno chemical network in a series of hot and warm jupiters.

We use a 1-d chemical kinetics model to investigate these reactions as part of a broader hcno chemical network in a series of hot and warm jupiters.

We find that temperatures approaching are favourable for the production of h2s and hs around the atmospheric level where detection by transit spectroscopy may be possible, leading to mixing ratios of around at lower temperatures, down to the abundance of s2 can be up to a mixing ratio of at the same pressure, at the expense of h2s and hs, which are depleted down to a mixing ratio of at the same pressure.

We also investigate how the inclusion of sulfur can manifest in an atmosphere indirectly, by its effect on the abundance of non-sulfur - bearing species.

We find that in a model of the atmosphere of the atmosphere of hd 209458 b, the inclusion of sulfur can lower the abundance of nh3, ch4 and hcn by up to two orders of magnitude around.

In the atmosphere of the warm jupiter 51 eri b, we additionally find the inclusion of sulphur depletes the peak abundance of co2 by a factor of five, qualitatively consistent with prior models.

Authors

Richard Hobbs, Paul Rimmer, Oliver Shorttle, Nikku Madhusudhan

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