Elisabeth Matthews
@elisabethastro.bsky.social
I'll finish this thread with our full model of this atmosphere -- explaining (almost) every wiggle in the data. So much brown dwarf physics & chemistry is being unveiled with JWST!
February 20, 2025 at 2:13 PM
I'll finish this thread with our full model of this atmosphere -- explaining (almost) every wiggle in the data. So much brown dwarf physics & chemistry is being unveiled with JWST!
In the appendices, we also get into the weeds of the data reduction, and appendix C discusses how we deal with one of the systematic effects present in out data. Might be of interest if you are also someone who worries a lot about the precise shape of your small wiggles in your JWST spectrum.
February 20, 2025 at 2:11 PM
In the appendices, we also get into the weeds of the data reduction, and appendix C discusses how we deal with one of the systematic effects present in out data. Might be of interest if you are also someone who worries a lot about the precise shape of your small wiggles in your JWST spectrum.
We modelled this spectrum using pRT retrievals (huge shout out to Paul Mollière for guiding me through this). We see H2O, NH3, CH4, as expected -- but also HCN and C2H2, which have not been seen in a brown dwarf atmosphere before. So, what do these molecules tell us about the atmospheric physics?
February 20, 2025 at 2:09 PM
We modelled this spectrum using pRT retrievals (huge shout out to Paul Mollière for guiding me through this). We see H2O, NH3, CH4, as expected -- but also HCN and C2H2, which have not been seen in a brown dwarf atmosphere before. So, what do these molecules tell us about the atmospheric physics?
We collected MIRI/MRS observations, which give a beautiful spectrum from 5-18um, all at R>1000. We see so much detail from all of the molecular absorption in the atmosphere -- all those wiggles you're seeing are real atmospheric structure!
February 20, 2025 at 2:07 PM
We collected MIRI/MRS observations, which give a beautiful spectrum from 5-18um, all at R>1000. We see so much detail from all of the molecular absorption in the atmosphere -- all those wiggles you're seeing are real atmospheric structure!
Cheers to all my awesome coauthors on this project, and a special shoutout to @astrocaroline.bsky.social for the best quote ever
July 24, 2024 at 3:30 PM
Cheers to all my awesome coauthors on this project, and a special shoutout to @astrocaroline.bsky.social for the best quote ever
What’s the coolest exoplanet you’ve ever seen?
July 24, 2024 at 3:27 PM
What’s the coolest exoplanet you’ve ever seen?
HR8799 JWST data 👀
the inner disk is detected! and all four planets! what a beautiful dataset, congrats Anthony Boccaletti and team 🪐🔭🧪💫
arxiv.org/abs/2310.13414
the inner disk is detected! and all four planets! what a beautiful dataset, congrats Anthony Boccaletti and team 🪐🔭🧪💫
arxiv.org/abs/2310.13414
October 23, 2023 at 2:47 PM
HR8799 JWST data 👀
the inner disk is detected! and all four planets! what a beautiful dataset, congrats Anthony Boccaletti and team 🪐🔭🧪💫
arxiv.org/abs/2310.13414
the inner disk is detected! and all four planets! what a beautiful dataset, congrats Anthony Boccaletti and team 🪐🔭🧪💫
arxiv.org/abs/2310.13414
this one? this is Bryan et al. 2020 ui.adsabs.harvard.edu/abs/2020AJ.....
October 1, 2023 at 12:19 PM
this one? this is Bryan et al. 2020 ui.adsabs.harvard.edu/abs/2020AJ.....
do you mean this one? this is from Kervella+2019, ui.adsabs.harvard.edu/abs/2019A%26...
October 1, 2023 at 7:39 AM
do you mean this one? this is from Kervella+2019, ui.adsabs.harvard.edu/abs/2019A%26...
Excited to spend the day thinking about JWST proposal ideas at STSci - thanks @astrorickman.bsky.social for hosting! 🪐💫🔭
September 8, 2023 at 12:35 PM
Excited to spend the day thinking about JWST proposal ideas at STSci - thanks @astrorickman.bsky.social for hosting! 🪐💫🔭
We had a great time hosting some debris disk experts at the MPIA this week for a JWST proposal workshop! Also really enjoyed the seminar from Tim Pearce and the MPIA colloquium from Sasha Hinkley - lots of good science to come for exoplanet and debris disk imaging 🪐
September 1, 2023 at 11:51 AM
We had a great time hosting some debris disk experts at the MPIA this week for a JWST proposal workshop! Also really enjoyed the seminar from Tim Pearce and the MPIA colloquium from Sasha Hinkley - lots of good science to come for exoplanet and debris disk imaging 🪐
Had such a nice time last week at the UK Exoplanet meeting - thanks again to all the organizers! 🔭
Some personal highlights for me was learning about young transiting planets from Ed Gillen, and SO2 from @drjovian.bsky.social (watch out for a very cool result soon 👀). It's also always ... (1/2)
Some personal highlights for me was learning about young transiting planets from Ed Gillen, and SO2 from @drjovian.bsky.social (watch out for a very cool result soon 👀). It's also always ... (1/2)
August 16, 2023 at 3:24 PM
Had such a nice time last week at the UK Exoplanet meeting - thanks again to all the organizers! 🔭
Some personal highlights for me was learning about young transiting planets from Ed Gillen, and SO2 from @drjovian.bsky.social (watch out for a very cool result soon 👀). It's also always ... (1/2)
Some personal highlights for me was learning about young transiting planets from Ed Gillen, and SO2 from @drjovian.bsky.social (watch out for a very cool result soon 👀). It's also always ... (1/2)
ESA swag? yes please! 🔭
July 12, 2023 at 3:42 PM
ESA swag? yes please! 🔭
Hello, world! Excited to join you all in the place of blue skies
July 9, 2023 at 11:38 AM
Hello, world! Excited to join you all in the place of blue skies