In this episode the team cover some of the latest exoplanet news stories. This month Hannah summarises the most recent exoplanetary science coming out of JWST’s early release science programs; Andrew tells us a bit about the habitability of Enceladus’s subsurface ocean, and Hugh talks about a new observation of compositional differences for planets around M-dwarfs.

JWST Early Release Science results are starting to come out from both the Direct Imaging community and from the Transiting community. Hannah talks through the first three papers of results and give a few hints of what is yet to come…

• The JWST Early Release Science Program for Direct Observations of Exoplanetary Systems I: High Contrast Imaging of the Exoplanet HIP 65426 b from 2-16 μm
• The JWST Early Release Science Program for Direct Observations of Exoplanetary Systems II: A 1 to 20 Micron Spectrum of the Planetary-Mass Companion VHS 1256-1257 b
• Identification of carbon dioxide in an exoplanet atmosphere

Andrew discusses a paper on the habitability of the sub-surface ocean on Enceladus:

• Abundant phosphorus expected for possible life in Enceladus’s ocean

Hugh presents a intriguing result looking at the density and bulk composition of planets around M-stars, a first hint of demographic information directly imprinted on the bulk properties:

• Density, not radius, separates rocky and water-rich small planets orbiting M dwarf stars

Exocast is edited by Fergus Hall, you can find more of his work www.fergushallmusic.com.

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