Bibiana Prinoth

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**

Does this all sound interesting to you? Then check out our webpage here: www.eso.org/sci/meetings... Registration deadline is on September 20! Be quick, hope to chat with you about #exoplanets there!! 🪐

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**

... but their discoveries will rely critically on synergies with ground-based observatories! ESO’s current facilities, VLT, VLTI, and ALMA offer complementary strengths in demographics, atmospheric characterisation, planet formation, and system architectures, ...

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**

If you are a bit like me, you may have found yourself asking: What do we learn from exoplanet X alone? Maybe we should start putting it in context with the population. This is EXACTLY what we are aiming at with this workshop. In short: Exoplanets can nowadays be studied as a population!

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

That surprised me, because many of us will (hopefully!) be the generation that gets to use these facilities. If I’m lucky, I’ll be retired in about 40 years 😄 So I’m curious: what kept „us“ from submitting? Lack of awareness, time, confidence, opportunities, mentorship, or something else? 2/3

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

tldr: In this paper, we combine a large observational data set, introduce a population metric, and show that the observed Ti/Fe trend can be explained either by temperature-dependent depletion or by temperature inversions triggering condensation. 20/n

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

However, big caveats: a) We're comparing forward models to the data, not performing full atmospheric retrievals. Someone, pls? b)Transmission spectra don't strongly constrain the T-p profile. What we really need are systems simultaneously studied in both transmission and emission. 18/n

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

But here's my favourite part in our model comparison: When we introduce temperature inversions, Ti-bearing species naturally disappear from the observable atmosphere because they condense efficiently in the deeper layers. Yet ... 16/n

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

With isothermal atmospheres, reproducing the observations requires removing increasingly more titanium relative to iron as planets get cooler (temperature-dependent coldtrap) The coolest planets require titanium abundances about 100x below stellar values, while iron can remain near stellar. 14/n

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

So instead of comparing the cross-correlation signals of Fe and Ti planet by planet, we defined a relative metric (details are in the paper if you care) that lets us place them on the same figure. And it's clear: Ti weakens much faster than Fe toward cooler planets. 🔗 arxiv.org/abs/2606.14490 12/n

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

Suddenly, my abandoned population-study idea was back on the table, and we analysed 15 hot and ultra-hot gas giants observed with ESPRESSO on the VLT and MAROON-X on Gemini North. @eso.org @noirlabastro.bsky.social The goal: compare iron and titanium across the entire population. 10/n

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

That discovery sparked a new question: how does titanium behave across the whole population of hot and ultra-hot Jupiters? And how does it compare to iron? Fortunately, I knew exactly the right people at exactly the right time, because they had just observed the missing part of the population! 8/n

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

This resulted in a paper where we detected titanium in a planet - WASP-121 b - where we thought it would be absent (and previous observations supported that) because efficient cold trapping should have removed it from the observable atmosphere. 🔗 www.aanda.org/articles/aa/... 6/n

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

That "side project" sat untouched while my first paper turned into three papers on the same planet WASP-189 b. That planet kept me busy for quite a while, you could say (well, the majority of my PhD to be honest 😬) 🔗 www.aanda.org/articles/aa/... 🔗 www.aanda.org/articles/aa/... 4/n

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

But let's start from the beginning... After publishing my very first PhD paper, I became intrigued by one question: instead of studying iron in a single ultra-hot atmosphere, why not across the entire observed population? 🤔 I set out to do that ... 🔗 www.nature.com/articles/s41... 2/n