Dan Valentine
@danvalentine.bsky.social
56 followers 38 following 4 posts
PhD candidate at Uni of Bristol studying the atmospheres of exoplanets using JWST 🪐🌈☁️ | he/him 🏳️‍🌈 | Cymro 🏴󠁧󠁢󠁷󠁬󠁳󠁿
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New paper alert 🔔 If you like eclipse mapping and are excited for the future opportunities that Ariel will provide, then check it out!

(Bonus: writing an eclipse mapping proposal? We've ranked all the best eclipse mapping targets for both Ariel and JWST!)

arxiv.org/abs/2510.03147
Eclipse Mapping with Ariel: Future Prospects for a Population-Level Mapping Survey
Eclipse mapping is a powerful tool for measuring 3D profiles of exoplanet atmospheres. To date, only JWST has been capable of widely applying this technique, but as a general observatory, it is too ti...
arxiv.org
Stay tuned for future releases! 👀 (3/3)
This is only the first instalment in a series of work on this planet, wherein the DREAMS team aims to perform one of the most comprehensive atmospheric characterisations of any exoplanet to date, using data from a multitude of @NASAWebb instruments. ⭐️🪐🌈🔭 (2/3)
Check out this awesome work from the JWST-TST DREAMS team! Using a combination of @NASAHubble and @NASAWebb MIRI data, we made the first characterisation of a cloud species in a transiting exoplanet atmosphere: quartz clouds in the atmosphere of WASP-17b! 💨☁️🪐✨(1/3)

webbtelescope.org/contents/new...
NASA’s Webb Detects Tiny Quartz Crystals in Clouds of Hot Gas Giant
webbtelescope.org
Reposted by Dan Valentine
Excited to share the 1st direct evidence of quartz clouds in the atmosphere of a transiting #exoplanet! With #JWST MIRI we found nanoparticles of quartz, SiO2, causing a spike in the planet's spectrum at 8.6 micron unveiling the Oxygen locked in the clouds
doi.org/10.3847/2041...
NASA’s Webb Detects Tiny Quartz Crystals in Clouds of Hot Gas Giant
webbtelescope.org