Cian O'Toole
@astrotoole.bsky.social
40 followers 41 following 2 posts
PhD researcher in Brown Dwarf Variability in Trinity College Dublin. https://cianotoole11.github.io/cianotoole.github.io/#
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Reposted by Cian O'Toole
evertnasedkin.bsky.social
🔭 It's paper day! Today I'm sharing the latest in a series of papers looking at the weather on other worlds, in this case bringing you the weather report from a nearby T-dwarf, SIMP-0136. 🪐

🧵 to follow...
Reposted by Cian O'Toole
aussiastronomer.bsky.social
Images from Palomar at 2 different infrared wavelengths last night - one that Saturn's methane atmosphere absorbs, and one the it reflects!

(The faint point source is the moon, Tethys!)

Taken by David Ciardi, Catherine Clark,
@lowbacca.bsky.social and Miranda Felsmann; animated by me (and ezgif!)
astrotoole.bsky.social
We chose this object as it is an extremely well characterised aurorally emitting T dwarf. There are two ongoing JWST programs characterising it's aurora and atmosphere in the infrared. It has an exceptionally strong magnetic field and we believe that it is the ideal object to search for UV aurorae!
astrotoole.bsky.social
I'm absolutely delighted to share that my Hubble Space Telescope proposal has been accepted! We will search for the first UV detection of an aurora outside the solar system on the brown dwarf 2M1047, using simultaneous observations from HST and the VLA.
Stay tuned for some very exciting science! 🔭📡
Reposted by Cian O'Toole
johannavos.bsky.social
Very proud of Cian O'Toole who gave his very first conference talk at #EAS2025 last week. 🔭

He is investigating the drivers of variability in three brown dwarfs using observations from HST, VLA and a new framework for modelling variable atmospheres. Paper is incoming so watch this space! 📄📄📄