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A systematic analysis of exoplanet transmission spectra with JWST-MIRI

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If you have a question about this talk, please contact Xander Byrne .

The launch of JWST has enabled atmospheric characterisation of sub-Neptunes more precise than ever. Specifically, its MIRI instrument allows to look for extra absorbers that are hard to find in the near-infrared. Recently this has been showed on temperate sub-Neptunes K2-18 b and TOI -732 c, with potential signs of complex molecules, although the significance of these results has been contested in subsequent works. According to these, the findings could be due to instrument systematics, or even mere random noise. In this context, we aim to disentangle these possibilities by looking at multiple MIRI transit observations, and check whether complex molecules are also found in other planets like hot gas giants.

This talk is part of the Institute of Astronomy Seminars series.

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