Planets @ Oxford

Great talk by @niamhk12.bsky.social on her talk at the Oxford Astrophysics Early Career Showcase! Teaching us all about supergranulation and the need to understand it in order to detect Earth twins!

Great talk by @exodransfield.bsky.social at the Oxford Astrophysics Early Career Showcase! Telling us all about observing exoplanets from Antarctica and her MANGOS survey, it’s still important to discover new planets!

Really enjoying Dr. Shreyas Vissapragada's @carnegiescience.bsky.social seminar on three population-level surveys of atmospheric escape @oxoplanets.bsky.social!

Talk today by Oxford PCDgroup alumnus Hamish Innes "
Hycean worlds can only form under extremely cold and water-rich conditions " at 11:48 in Room Jupiter. Many other great talks in this session, which starts at 9:30 AM and continues after coffee, at 11AM (all in Jupiter).

Today at #EPSCDPS2025 there is a talk by Oxford PCDgroup alumnus Maxence Lefevre on sulfur allotropes in the Venus atmosphere. 11AM in Room Sun. This is one of many talks and posters on Venus and even Titan Maxence is involved in. Maxence was a postdoc on my ERC EXOCONDENSE project.

Very excited to share that my new paper has been accepted for publication in MNRAS!
We are applying Doppler Imaging to model the activity signals from the HARPS-N Sun-as-a-star spectra! We show that injected planets can be retrieved with great accuracy!
ui.adsabs.harvard.edu/abs/2025MNRA... 🔭🪐🧪

Today we had a great seminar given by Dr Jake Turner (@astrojaket.bsky.social) about how to use radio astronomy to study magnetic fields around exoplanets! Lots of interesting science, including potential observatories on the moon!

Despite some technical hitches, we had a very entertaining and informative Oxoplanets journal club by @exoscar.bsky.social and @astroklein.bsky.social, all about the mysteries surrounding AU Mic and its planets

In our now-published paper we model the early history of three exoplanets to specifically study the role of tidal heating on their capacity to solidify. A physically robust feedback mechanism can keep them molten, even with relatively thin atmospheres, which may extend to lots of rocky exoplanets.

Congratulations to former Oxoplanet member Dr Annabella Meech (@annabellameech.bsky.social) on her poster presentation at #ExoclimesVII, she presented her research studying the atmosphere of the exoplanet TrES-4b! You can read more about her work here: academic.oup.com/mnras/articl...

You can read more about how high resolution spectroscopy can constrain sub-Neptune atmospheres (and provide constraints that are comparable with JWST…) in the paper we published this year! (ui.adsabs.harvard.edu/abs/2025MNRA...)

Catching up on some interesting #ExoclimesVII posters. Here's one by Marylou Fournier-Tondreau (DPhil student in my Oxford Planetary Climate Dynamics Group) on new models of seafloor weathering. This is being calibrated against Earth data, because that's where the data are for now ...

And an #ExoclimesVII poster by Shami Tsai (postdoc alumnus of my Oxford PCDgroup) on sulphur chemistry in exoplanet atmospheres, including DMS. Significant results include a cluster of other compounds that should appear alongside DMS, abiotic photochemical DMS production.

Congratulations to DPhil student Marylou Fournier-Tondreau on her #ExoclimesVII poster presentation on her work concerning silicate weathering!

Congratulations to Luke Parker (@luke-parker.bsky.social) and Prof Jayne Birkby (@jaynebirkby.bsky.social) on their poster presentation at #ExoclimesVII! Showcasing the incredible high resolution spectroscopy work being conducted within Prof Birkby’s research group!

Congratulations to Prof Tad Komacek (@tadkomacek.bsky.social) on his poster presentation at #ExoclimesVII. And more good news, he has now joined the SOC for @exoclimes.bsky.social!

Congratulations to Dr Chloe Fisher (@astrochloe.bsky.social) on her #ExoclimesVII talk about the JWST spectra of the planets around TOI-125, wrapping up the end of day 4 of the conference!

Congratulations to Luke Parker @luke-parker.bsky.social on his poster presentation at #ExoclimesVII, you can read more about this technique in this paper: arxiv.org/abs/2405.08867

Congratulations to Dr Claire Guimond on her #ExoclimesVII talk about slightly carbon rich rocky exoplanets!

At #ExoclimesVII, Claire Guimond (a postdoc in my Planetary Climate Dynamics group at Oxford) is talking about slightly carbon-rich planets, with an emphasis on outgassing composition and effects of interior chemistry,

Congratulations to DPhil student Harrison Nicholls (@nichollsh.bsky.social) on his #ExoclimesVII talk about the atmospheres of lava worlds! He uses his newly developed models (Proteus and AGNI) to study the atmosphere of L98-59d. You can read more about his work here: arxiv.org/abs/2507.02656

Shoutout to Dr Mark Hammond and DPhil student Alex McGinty on their work studying the phase curve of the hot rocky exoplanet TOI-561b! It is incredible that they are spectroscopically analysing three full orbits of the planet, something like this was impossible a few years ago #ExoclimesVII

Congratulations to Dr Jake Taylor (@astrojake.bsky.social) on his poster at #ExoclimesVII concerning the JWST NIRISS/SOSS transmission spectrum of the super-Earth GJ 357b. The paper is published and can be read here: academic.oup.com/mnras/articl...

Congratulations to Dr Tobias Meier (@tgmeier.bsky.social) on his #ExoclimesVII poster presentation about the lava world K2-141b!

At #ExoclimesVII Sophia Vaughan (another Oxford Alumna who did her doctorate with Jayne Birkby, and who is currently at MPI Heidelberg ) is telling us about reflected light spectroscopy.

Congratulations to former Oxoplanets member Dr Sophia Vaughan (@sophiavaughan.bsky.social) on her #ExoclimesVII talk about the weird desert world LTT-9779b! She used all 4 telescopes at VLT to observe the planet in reflected light, attempting to measure the cloud properties of the planet.

Congratulations to former Oxoplanets member Dr Elsie Lee for her #ExoclimesVII review talk on Modelling Clouds in 3D. She has also created python tutorials where we can model these ourselves!

Today at #Exoclimes VII is all about clouds. We kick off with a review talk on clouds in 3D by Elspeth Lee, an alumna of my Planetary Climate Dynamics group, now at Bern University. Very nice pedagogical intro to the fundamental physics, also the latest results.

At ExoSLAM, we had Dr Chloe Fisher (@astrochloe.bsky.social) give a great lecture about machine learning and its application to studying the atmospheres of exoplanets #ExoclimesVII

Final #ExoclimesVII talk of the day is given by former Oxoplanets member Prof. Vivien Parmentier, about hot Jupiters as a population. Much of the work was done by his former DPhil student, Dr Alex Roth.