Nature research paper: High atmospheric metal enrichment for a Saturn-mass planet
We are providing an unedited version of this manuscript to give early access to its findings. Before final publication, the manuscript will undergo further editing. Please note there may be errors present which affect the content, and all legal disclaimers apply.Atmospheric metal enrichment is a key diagnostic of the formation of giant planets. The giant planets of the solar system exhibit an inverse relationship between mass and both their bulk metallicities and atmospheric metallicities.
However, there is significant scatter in the relationship and it is not known how atmospheric metallicity correlates with either planet mass or bulk metallicity. Here we show that the Saturn-mass exoplanet HD 149026bhas an atmospheric metallicity 59 - 276 times solar , which is greater than Saturn’s atmospheric metallicity of ~7.5 times solarO absorption features in the thermal emission spectrum of the planet measured by JWST.
France Dernières Nouvelles, France Actualités
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