iiinova — where your digital self keeps evolving

Bibiana Prinoth @bibianaprinoth.ch · 15/09/2026

In case you have missed it, we are hosting a super cool workshop on #exoplanets studies in Garching, Vitacura and Nice (YES, 3 places at the same time!!!) in November. Bridging Horizons: Harnessing ESO's current facilities for the dawn of exoplanet population studies Dates: **2-6 November 2026**

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BOWIE+ Seminar Series @bowieseminar.bsky.social · 01/09/2026

Cathal Maguire's talk on limb asymmetries in exoplanet atmospheres is now available, just in time to inspire your JWST proposal writing. #exoplanets #astronomy www.youtube.com/watch?v=f47c...

youtube.com

Limb from Limb: Observing Atmospheric Asymmetries from the Ground and Space - Cathal Maguire

YouTube video by BOWIE+ Seminars

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Linn Boldt-Christmas @nplinnspace.bsky.social · 10/08/2026

…and here, ”recently” = ”within 1 million years” 😅 but that’s like, *SO* recent in planet terms!! ”…models [showed] liquid can be transported […] through small conduits, similar to lava or geyser tubes, driven by buoyancy or pressure from below.” Such neat combo of several cool physics topics! 🔭🧪🪐🌋

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Bibiana Prinoth @bibianaprinoth.ch · 26/07/2026

Gonna do something a bit scary on Monday 🙃 I‘ll be talking about magnetic fields on #exoplanets in German 🥺

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Forming Worlds Lab @formingworlds.space · 23/07/2026

New paper led by Joe Williams (@exeter.ac.uk), with our group among the co-authors ❄️ "Planetesimal Formation Across the Stellar Mass Spectrum and its Influence on Exoplanet-Inherited Volatile Budgets" Read the paper: arxiv.org/abs/2607.20271 #Exoplanets #PlanetaryScience

Two-panel schematic comparing how a protoplanetary disc evolves around a very low mass star and around a heavier one. The top panel, labelled 0.1 solar masses, follows a disc fed briefly by material falling in from the collapsing cloud: the disc expands, dust coagulates into icy pebbles, the pebbles drift inward and deliver their ice to the water snowline where a single generation of planetesimals forms, and the dust is then depleted, leaving grey dehydrated planetesimals. The bottom panel, labelled 0.3 solar masses and above, shows the same sequence but with a first generation of planetesimals already forming during the infall phase and a second generation later at the snowline, leaving a mix of blue water-rich and grey dehydrated bodies. A colour key marks rocky pebbles, the water sublimation front, water ice, dehydrated planetesimals and water-rich planetesimals, and an arrow along the bottom marks time running left to right.

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ESO @eso.org · 22/07/2026

That's no moon. It's a...hang on, what should we call it? 🤔 Our VLT has revealed evidence for a moon-like object in the CD-35 2722 system. Yet this new ‘exomoon’ detection is challenging cosmic labels! 🔭 🧪 #exoplanets 1/4

The artist's impression features a small star (left) and two gaseous bodies (centre and right), set against the blackness of space. Credit: ESO/M. Kornmesser.

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ESO @eso.org · 15/07/2026

Ten years of hide-and-seek! 🫣 Astronomers used our VLT to find a new #exoplanet orbiting the famous star Beta Pictoris — hiding in archival ESO observations spanning over a decade! And it's shyer than any exoplanet we've imaged before. 🔭 🧪 1/3 📷 ESO/B. Sutlieff, M. Bonse et al.

Image of a star system. The central star is hidden behind a coronagraph, marked by a white star symbol at the centre. A bright companion appears to the left, while a much fainter companion, indicated by a white arrow, is visible to the right against a reddish-orange background.

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Sarah Kendrew @sarahkendrew.bsky.social · 14/07/2026

A major take-home from #SPIEAstro is that the level of scientific ambition in the European ground-based astronomy community is sky-high following the successes of VLT/VLTI, ALMA and the progress on ELT. @eso.org is *the* global leader in this area. This event sounds fab.

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Bibiana Prinoth @bibianaprinoth.ch · 14/07/2026

Hi #exoplanets folks, I’m attending the Expanding Horizons conference @eso.org this week (thinking about the facility post-ELT… terrifying, I know 😅). One thing that came up is that relatively few early-career astronomers submitted (co-authored) white papers for the process. next.eso.org 1/3

next.eso.org

Expanding Horizons

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Linn Boldt-Christmas @nplinnspace.bsky.social · 06/07/2026

A very merry yee-haw to all horse girls & cowboys (gender neutral: horse cows?) attending #HoRS3S in Granada this week! I've sadly ended up unable to attend IRL this year, but am sending my best in the form of a poster that'll be up in my absence on #exoplanet WASP-107 b 🔭🤠💖🐎🧪 Have a fun week y'all!

Don’t throw away your rubbish ground-based transit data (yet)! -- A cautionary tale starring warm super-puff WASP-107 b and VLT

The problem: Ground-based transmission spectroscopy observations have seen remarkable success in characterising hot Jupiter exoplanets in the last decade with increasingly high detail, and our hope is to eventually characterise smaller, cooler exoplanets similarly – one day, even Earth-like targets. To get there, we have to explore what shortcomings exist in our current observational capabilities and methodology by exploring an ”in-between” target: the neither-temperate-nor-hot Neptune-sized WASP 107-b (Teq ≈ 740K).

Method: WASP-107 b is already well-studied from space, and thus a good playground for assessing the quality of our ground-based approaches. It is observationally favourable in some ways (e.g. good scale height) but more challenging in others (e.g. cloudy, cooler Teq), making it a good case study for our tried-and-tested techniques like cross-correlation. A number of molecular species had already been detected by JWST, but could we do it from the ground? By using a combination of real and simulated data, we could explore what aspects of traditional methods perform well for these challenging targets, and which need a rethink.

We found that for cooler and cloudier targets like WASP-107 b, the amount of signal that one can reasonably expect is unfortunately very low. Several factors can compound and effectively create scenarios where there is simply not enough signal to reach detections of S/N ≥ 5, even if everything is done ”correctly”. What looks like bad data might not be bad, just… as good as we can get, for now!

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Andrew Mann @amann.bsky.social · 02/07/2026

Last is the SOYSAUCE survey, PI Madyson Barber. Work on studying the alignment between planets and their host stars, focusing on <200 Myr systems (fast misalignment or primordial misalignments). So far, things look aligned. This was done as a twilight zone reference 🧪🔭⭐ #exoplanets

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Bibiana Prinoth @bibianaprinoth.ch · 30/06/2026

I am giving a keynote at the HoRS3S conference next week (my first keynote so consider me very excited 🥹) & seriously it‘s so much fun prepping those slides 🤭 Shoot me a message if you‘re coming to HoRS3S next week. I might find a way to give you a shoutout 😋 #exoplanets

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Bibiana Prinoth @bibianaprinoth.ch · 29/06/2026

Anyone doing some live-posting from #Exo6 #Exoplanets6? Not seeing anything on #exoplanets but maybe I am blind? FOMO is kicking in (but I really needed the break 😬)

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Duncan Christie @astroduncan.bsky.social · 23/06/2026

MPIA PhD student Angelique Kahle has a very cool paper out today looking at everyone's favourite ultra-hot Jupiter, WASP-121b. Angelique is giving a talk on the results next Monday at Exoplanets VI, as well. #exoplanets arxiv.org/abs/2606.21855

arxiv.org

The panchromatic JWST dayside spectrum of WASP-121 b reveals a refractory-rich formation

One path to understand how planets form is to link their present-day atmospheric composition to predictions from planet formation models. For the hottest planets, the abundances of refractory species ...

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Bibiana Prinoth @bibianaprinoth.ch · 26/06/2026

Last week, I uploaded my first first-author paper as Dr. Prinoth to arXiv, and I finally have time to tell you about it. This one has been a long time coming, and I'm incredibly happy and proud that it's finally out in the #exoplanets world! 🔗 arxiv.org/abs/2606.14490 1/n

arxiv.org

A population view of transiting hot giant exoplanets: Tracing Fe and Ti chemistry with ESPRESSO and MAROON-X

Hot and ultra-hot Jupiters offer a unique laboratory to study atmospheric chemistry at the population level using ground-based high-resolution spectroscopy. Fe and Ti are key tracers of thermal and ch...

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Bibiana Prinoth @bibianaprinoth.ch · 25/06/2026

Very happy to share that I got awarded the IAU PhD Prize of Division F for my thesis on “Transmission spectroscopy of hot gas giant #exoplanets ” 🪐 I’m incredibly proud and happy, but also immensely grateful for all the support from supervisors, collaborators, friends and family through all this! ❤️

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Bibiana Prinoth @bibianaprinoth.ch · 12/06/2026

I got to talk (and write) about my favourite objects: #exoplanets 🪐 Tack så mycket @popularastronomi.se 🫶

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Bibiana Prinoth @bibianaprinoth.ch · 02/06/2026

Magnetic fields tend to be the running joke at #exoplanets conferences. You can be sure someone asks „what about magnetic fields?“. This is the answer ⬇️

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Bibiana Prinoth @bibianaprinoth.ch · 31/05/2026

I also finally submitted my own abstract 😌 Don’t forget yours!

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Bibiana Prinoth @bibianaprinoth.ch · 26/05/2026

Hi #exoplanets people! Just popping by to remind you of the upcoming abstract deadline (31 May) for "Bridging Horizons: Harnessing ESO's current facilities for the dawn of exoplanet populations studies" happening in November! 🪐🔭 www.eso.org/sci/meetings...

eso.org

ESO - Bridging Horizons

ESO is the European Organisation for Astronomical Research in the Southern Hemisphere. It operates the La Silla Paranal Observatory in Chile and has its headquarters in Garching, near Munich, Germany.

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Linn Boldt-Christmas @nplinnspace.bsky.social · 28/04/2026

🪐🔭 Our paper on everyone's favourite popcorn #exoplanet, WASP-107 b, has now been accepted for publication in A&A! Here is the updated arXiv version: arxiv.org/abs/2508.18964 The main science results are covered in the original thread below ⬇️ but since we added a bunch of cool new things... 🧪🧵

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Bibiana Prinoth @bibianaprinoth.ch · 27/02/2026

The ESO studentship was probably one of the best experiences of my academic career so far; recommend it 100%! Please spread into your networks. Happy to answer questions or even host a student with one of my fellow #exoplanets people. Just get in touch!💙

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Bibiana Prinoth @bibianaprinoth.ch · 03/02/2026

This goes onto my reading list immediately ☺️

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Bibiana Prinoth @bibianaprinoth.ch · 21/01/2026

As one of the things I do @eso.org, I am part of the organising team for the Star-Planet Exchange meetings. We‘re always looking for speakers to tell us about #stellarastro and #exoplanets (or even both? 🤩). If you pass through Munich any time soon, we‘d love to have you. Shoot me a message! 🪐⭐️

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Bibiana Prinoth @bibianaprinoth.ch · 17/12/2025

The application for the ESO Summer Research Programme 2026 has just opened! It‘s a six week programme in Garching close to Munich where pre-Ph.D students can work on a hands-on project. Working at @eso.org is a fabulous experience, so please help me spread the word ✨ 🔗 eso.org/sci/meetings...

eso.org

ESO - SummerResearch2026

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Bibiana Prinoth @bibianaprinoth.ch · 14/11/2025

When @eso.org announces your dream job but your still too much of a science baby 😭 In case you consider applying, feel free to reach out. Happy to chat about ESO 💙🫶 #astronomy

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Bibiana Prinoth @bibianaprinoth.ch · 01/10/2025

Time to update that affiliation I guess! I‘m starting my fellowship @eso.org in Garching 🇩🇪 today! Wish me luck ❤️🤭

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Planets @ Oxford @oxoplanets.bsky.social · 09/07/2025

Congratulations to Dr Tobias Meier (@tgmeier.bsky.social) on his #ExoclimesVII poster presentation about the lava world K2-141b!

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Planets @ Oxford @oxoplanets.bsky.social · 09/07/2025

Congratulations to Dr Jake Taylor (@astrojake.bsky.social) on his poster at #ExoclimesVII concerning the JWST NIRISS/SOSS transmission spectrum of the super-Earth GJ 357b. The paper is published and can be read here: academic.oup.com/mnras/articl...

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Bibiana Prinoth @bibianaprinoth.ch · 10/07/2025

In case you’re interested in the paper(s) about WASP-121 b using the 4UT mode of ESPRESSO — or as I like to call it: ESPRESSO’s superpower — check out: ui.adsabs.harvard.edu/abs/2025A%26... ui.adsabs.harvard.edu/abs/2025Natu...

ui.adsabs.harvard.edu

Titanium chemistry of WASP-121 b with ESPRESSO in 4-UT mode

Transit spectroscopy usually relies on the integration of one or several transits to achieve the signal-to-noise ratio (S/N) necessary to resolve spectral features. Consequently, high-S/N observations...

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Astronomer Royal for Scotland | Catherine Heymans @astroroyalscot.bsky.social · 12/06/2025

Nature study: when do girls fall behind in #maths? During their 1st year at primary school. 4 yr study, 2.6M French children. By comparing kids born a month apart but in diff school years they show it's education, not age, that triggers the gap☹️ 🧪👩‍🔬 ℹ️: www.nature.com/articles/s41... 👇Excellent 🧵

A set of graphs

Title: WATCH THE MATHEMATICS GENDER GAP EMERGE The school environment triggers a gender gap in mathematics. Test results
from all children in France who started school in 2018 reveal the trend.

Graph 1: Start of first year of school. Boys and girls show similar performance in maths test results.

Graph 2: Four months into first year
We see more boys are now starting to achieve the higher grades with girls getting more poorer grades

Graph 3: Start of second year at school
Gender gap is now exaggerated with boys twice as likely to get the top marks than their female counterparts.

From https://www.nature.com/articles/d41586-025-01831-4

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Bibiana Prinoth @bibianaprinoth.ch · 12/06/2025

I don't post super often here, but I just came by to share this news article with you (published alongside the paper in Nature yesterday). www.nature.com/articles/d41... There are a couple of sentences in the news article that stuck with me more than anything: 1/x

nature.com

When do girls fall behind in maths? Gigantic study pinpoints the moment

Analysis of almost three million children captures when ‘mathematical gender gap’ first emerges and could help focus efforts to stop girls from falling behind.

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Bibiana Prinoth @bibianaprinoth.ch · 13/05/2025

Last Friday, I defended my PhD in Astronomy and Astrophysics 🪐 Still processing… but you can call me Dr. Bibi now. 💅 I am eternally grateful to my supervisors, mentors, and everyone who supported me on this journey. 💜 #astronomy #exoplanets

Little me during my defence talk convincing the audience, committee and opponent that titanium oxide is a wonderful molecule.

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Dr Ryan MacDonald @distantworlds.space · 17/04/2025

𝗡𝗼, 𝗮 𝗯𝗶𝗼𝘀𝗶𝗴𝗻𝗮𝘁𝘂𝗿𝗲 𝘄𝗮𝘀 𝗻𝗼𝘁 𝗷𝘂𝘀𝘁 𝗱𝗲𝘁𝗲𝗰𝘁𝗲𝗱 𝗶𝗻 𝗞𝟮-𝟭𝟴𝗯'𝘀 𝗮𝘁𝗺𝗼𝘀𝗽𝗵𝗲𝗿𝗲. K2-18b is back in the news, now with a bold claim that biosignature molecules (DMS and/or DMDS) have been 'detected at 3σ'. Most exoplanet astronomers are extremely sceptical about these claims, let's see why (1/n). 🔭🧪🪐 #exoplanet

Artist's impression of the exoplanet K2-18b.
Credit: A. Smith, University of Cambridge.

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Aline Novais @alinenovais.com · 21/04/2025

Meu vídeo sobre a “detecção de bioassinaturas” na atmosfera do exoplaneta K2-18b e os possíveis problemas relacionados a essa análise, do ponto de vista de quem trabalha na área 🪐 Links abaixo:

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Chris Lintott @chrislintott.bsky.social · 17/04/2025

An astonishing headline reporting on new observations from a team led to Nikku Madhusudhan claims they’ve found ‘hints of life’ on a planet orbiting a dwarf star some 124 light years away. What’s going on? (1/n) www.bbc.co.uk/news/article... 🔭 🧪

bbc.co.uk

Promising hints of life found on distant planet K2-18b

Scientists find new but tentative evidence that a faraway world orbiting another star may be home to life.

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Ethan Siegel @startswithabang.bsky.social · 17/04/2025

Chris, this is terrible scholarship from Nikku and his team. It's also INSANELY irresponsible scicomm on the part of everyone involved with reporting on it. It's going to take such an effort to correct this misinformation, and it comes at a time where scrupulousness is sorely needed.

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Emily Hunt @emily.space · 17/04/2025

Reading more about this, I'm disappointed in the authors of this study & how they've turned a very marginal result into worldwide press releases. In this climate, we as scientists have a responsibility to lead by example and represent our work accurately to the press. This is not that. ☄️🔭🧪

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Populär Astronomi @popularastronomi.se · 14/04/2025

Nu finns Populär Astronomi här på Bluesky också! 🚀🥳 Vi har skrivit om rymden och astronomi i mer än hundra år – papperstidningen kommer ut med fyra nummer per år och nyhetsartiklar publiceras löpande på vår hemsida. www.popularastronomi.se

popularastronomi.se

Populär Astronomi - Rymden och astronomi på svenska

Sveriges tidskrift för astronomi och rymdfart sedan 1920.

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Bibiana Prinoth @bibianaprinoth.ch · 15/04/2025

Nailed it! As per Swedish tradition, I’ve officially nailed my thesis to the wall to announce that I’ll be defending my PhD in #exoplanets atmospheres in 3 weeks and 3 days. Dr title, I’m coming for youuuu!

Me happily smiling at the camera after nailing my thesis to the wall.

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Brett Morris @brettmorr.is · 09/04/2025

After maybe wikipedia, the most important page on the internet is hiring. 🧪🔭

info.arxiv.org

Careers at arXiv - arXiv info | arXiv e-print repositorycontact arXivsubscribe to arXiv mailingsReport an issue

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Bibiana Prinoth @bibianaprinoth.ch · 03/04/2025

The cat’s out of the bag! 🥳 I'm thrilled to share that I’ll be joining @eso.org as a 2025 ESO Fellow in Germany starting this October! Expect plenty more #astronomy and #exoplanets spam from me in the years to come 🤓 But first—gotta earn that Dr. title! www.eso.org/sci/publicat...

eso.org

ESO - Introducing the 2025 ESO Fellows - Germany and Chile

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Linn Boldt-Christmas @nplinnspace.bsky.social · 30/03/2025

👇 Extremely cool work by the awesome @alinenovais.com on #exoplanet atmospheres with HST, highlighting some key challenges in today’s research: retrievals are hard, clouds are hard… everything is hard, which is why it’s important to revisit older data! 🧪🔭☄️

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Aline Novais @alinenovais.com · 30/03/2025

I am thrilled to announce my second PhD paper, under the supervision of Luan Ghezzi, Kevin Heng, and Chloe Fisher 🪐📄 This study is a summary of my PhD thesis (2019–2024), where we analysed retrievals of HST WFC3 transmission spectra and parameter degeneracies associated with them. Read more ⬇️

doi.org

Parameter degeneracies associated with interpreting HST WFC3 transmission spectra of exoplanetary atmospheres

ABSTRACT. The Wide Field Camera 3 (WFC3) instrument on the Hubble Space Telescope has provided an abundance of exoplanet spectra over the years. These spec

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Bibiana Prinoth @bibianaprinoth.ch · 27/03/2025

In the heat of battle that was submitting my PhD thesis, I completely forgot to share this with you! @nature.com invited us to contribute a Research Briefing on our latest #exoplanets paper 🪐 Hope you enjoy it 😊

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