Dan Valentine
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danvalentine.bsky.social
Dan Valentine
@danvalentine.bsky.social
58 followers 40 following 4 posts
PhD candidate at Uni of Bristol studying the atmospheres of exoplanets using JWST 🪐🌈☁️ | he/him 🏳️‍🌈 | Cymro 🏴󠁧󠁢󠁷󠁬󠁳󠁿
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danvalentine.bsky.social
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
October 6, 2025 at 4:18 PM
danvalentine.bsky.social
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
October 16, 2023 at 5:34 PM
Reposted by Dan Valentine
stellarplanet.bsky.social
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
October 16, 2023 at 2:03 PM