Evie Ahrer

Hi all! If you are looking for a conference in exoplanet interiors in 2026, check out "Layers of Understanding: Model Intercomparisons of Exoplanet Interiors": layersofunderstanding2026.github.io
It will take place in MPIA's campus in April 13-17th. The registration deadline is 15 January 2026

Very proud of the #jwst 'Signal in the Noise' workshop @lili-alderson.bsky.social and I organised together with @benrackham.bsky.social and Michael Radica (+ @afeinstein20.bsky.social who sadly couldn't join us) 🏰
We'll be sharing lessons learned soon so stay tuned! 🪐

and Evie Ahrer @eahrer.bsky.social wrote a Nature comment on the JWST revolution for exoplanet atmospheres, from CO2 and photochemistry on gas giants to the push to smaller/cooler worlds www.nature.com/articles/s41...

Our paper on PSO J318 is finally out 💪 . I want to thank all of my coauthors who made this study possible 🙇 !! It could be that we see the first cloud seeding nuclei forming at the top of the atmosphere…?

arxiv.org/abs/2507.18691

New paper out! This is a review of the published JWST observations of rocky exoplanets so far: arxiv.org/abs/2507.00933

Quick summary of the key points:

Just shared a new paper on the arXiv, led my @luiswel.bsky.social and me, on the challenges associated with detecting gases in exoplanet atmospheres. As the field pushes towards new and exciting opportunities, we thought it was time to talk about what it really means to “detect” something!

Do you want to do cutting-edge exoplanet science with JWST in a Bavarian castle?

If yes (and why would you say no???) there are still a few spots open for the Ringberg Workshop "Signal in the Noise" (Nov 17 - 21). Register here sites.google.com/view/jwst-ri...

*Last day to apply for this awesome workshop we're organising!*
It's all about exoplanet atmospheres, challenging our understanding of stellar activity of all types of stars and minimising systematic noise! 🪐

Find out more and apply: sites.google.com/view/jwst-ri...
#exoplanets

Award details | Funding and scholarships for students | University of Exeter

Nathan Mayne (who isn't on Bluesky) is advertising a PhD position working on dust in the Martian atmosphere. I worked with Nathan as a postdoc, and both he and his group are wonderful.

www.exeter.ac.uk/study/fundin...

Redakteur für Astronomie (m/w/d) Titel: Redakteur für Astronomie (m/w/d) Standort: Heidelberg Bewerbungsfrist: 03.04.2025 Über Springer Nature: Springer Nature öffnet Türen zu Entdeckungen. Seit mehr als 180 Jahren sind unsere Marken...

Unsere Kolleg*innen bei @spektrum.de und Sterne und Weltraum brauchen Verstärkung! Wie wärs?

springernature.wd3.myworkdayjobs.com/de-DE/Spring...

It's almost April (!), which means time is running out to apply for Signal in the Noise, a workshop at Ringberg Castle focused on understanding systematic and stellar noise in JWST transiting exoplanet data

Find out more and apply: sites.google.com/view/jwst-ri...

Deadline April 1st 23:59 EST

Introducing "Signal in the Noise: The Ringberg Workshop on JWST Exoplanet Observations"!

Goals: Overcome the instrumental + astrophysical challenges we face when characterizing transiting exoplanet atmospheres with JWST

App Deadline: April 1, 2025

sites.google.com/view/jwst-ri...

🔭⭐ #exoplanets

One of the best and most impactful experiences of my life!
Please share this with anyone you know who likes astronomy and is between 18 and 24 years old! 🔭🪐
(Feel free to ask me any questions about it too!)

🚨Only 1 week left to apply to Exoclimes VII in Montreal!!🚨

🚨 SPECIAL FIRST POST 🚨
Applications to @exoclimes.bsky.social (7-11 July, 2025 at @umontreal.ca) is now OPEN until Jan 24, 2025! Join us for a week of exciting talks on planetary atmospheres interspersed with ample opportunities to discuss and forge new collaborations! forms.gle/mpeZ3LXGoFb9...

AI-generated image of a thunderstorm

PhD position available at the University of Bristol! Come work with me to model convection in sub-Neptune atmospheres! www.findaphd.com/phds/project...

PhD Advertisement!
4-yr PhD position as part of the EPSRC Aerosols CDT to work with me and Prof Jonathan Reid at Bristol on Laboratory experiments to measure the Optical Properties of Silicate aerosols for applications to exoplanet atmospheres.

See Application instructions and details via link

hiiiii I'm 🚨 hiring a postdoc to join our JWST kronos (kronos-jwst.github.io) collaboration!! 🚨 candidates should have an interest in exoplanet atmospheres, stellar activity, and/or young planetary systems

full job ad is here: careers.msu.edu/en-us/job/52...

spread the word!

🔭🪐🧪

At the Kapteyn Astronomical Institute of the University of Groningen we are looking for 2 PhD students in the fields of exoplanets and planetary science, see:
aas.org/jobregister/...
www.rug.nl/research/kap...
Please share these positions with potentially interested students and your network. 🙂

Oldest and coldest: JWST claims a first for exoplanet imaging JWST has opened a window on exoplanet imaging by observing the planet ε Indi Ab directly. The planet’s existence had been inferred, but its age and temperature made the discovery difficult to confirm ...

Nice writeup from @yollevoreloj.bsky.social of our recent paper, peering at a nearby exoplanet -- check it out!

www.nature.com/articles/d41...

Spread the word! 🔭
I was 18 when I first went and IAYC had a huge impact on my life. Meeting people working towards their PhDs was eye-opening for a 1st-gen university student! I would've never gone on to study for a PhD without IAYC! 🪐 (or met my partner 🥰)

Do you love planets? Do you love stars? Do you love high-res spectra? Do you love horses & great conference logos?

If you answered yes to two or more of the above, Two HoRSEs is the conference for you! Join us 15 - 19 July in Berlin.

Register by 16 Feb: sites.google.com/view/two-hor...

Hannah Wakeford's Mo Space Hannah's Motivation: Globally, the rate of suicide is alarmingly high, particularly in men. The culture needs to change and we need to help change it together. Too many men are ‘toughing it out’, ...

It’s the last day of November and this year I have been moving for
@MovemberUK
the aim was 60km & I’m nearing a recorded 80km!

Thanks to all who donated their support. Together we can help improve Mens mental health around the world and see our men thrive and survive
#mentalHealthMatters

🚨🚨I'm hiring !!🚨🚨

I’m looking for a Research Fellow to join my team at Trinity College Dublin to work on Extrasolar Atmospheres ☘️🪐☁️🔭

Deadline: December 31st 
Ad: jobregister.aas.org/ad/c1a19f23

Please share widely!

Applications are open until Nov 30th! 🪐🔬⭐️

An ammonia trail to exoplanets

Using the JWST, MPIA's Paul Mollière and astronomers from ETH Zurich and the Centro de Astrobiologia (CAB-CSIC-INTA) have found ammonia in a brown dwarf. The ratio of nitrogen isotopes in the gas provides information about the formation of giant gas planets. 🔭
www.phys.ethz.ch/news-and-eve...

Exciting PhD opportunity at the University of Exeter to study Earth's space weather and its interactions with the surface climate. NERC GW4+ DTP PhD studentship with Nathan Mayne, James Manners and me www.exeter.ac.uk/study/fundin...

JWST MIRI coronagraphic images of HR8799. Top row shows data, and bottom row shows model, for wavelengths 10.65micron, 11.40micron, 15.50micron and 23.0micron. All four planets are seen at 10.65micron, and the inner disk is clearly seen at 15.5micron and especially 23micron.

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

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...

Überblick des MPIA-Campus mit Beschriftung "Tag der Offenen Tür, 14.10.2023, 10 bis 17 Uhr"

Am kommenden Samstag ist es soweit – dann gehen bei uns eine ganze Menge Türen auf. Wer in der Gegend ist: schaut doch mal vorbei, bei unserem Tag der Offenen Tür! 14. Oktober von 10 bis 17 Uhr. Es gibt viel zu sehen, zu hören und zu machen – z.B. auch für Kinder! www.mpia.de/tdot2023