Dr. Julia Victoria Seidel
Poincaré Research Fellow
@ESO
Bio
I am currently based at Lagrange Laboratory at the Observatoire de la Côte d'Azur in Nice, France as a Poincaré independent Research Fellow (soon Chargé de Recherche CNRS). Before, I have been an independent Research Fellow at the European Southern Observatory (ESO) based at Paranal Observatory in Chile until October 2024. In my main research, I push observational and retrieval techniques alike towards the true observability of an Earth-like exoplanet, especially focusing on the observations of exoplanet atmospheric dynamics. For this work, I have won the 2024 MERAC Prize. My latest work on the observation of the 3D climate of ultra-hot Jupiters provides evidence of mangetic fields in exoplanets (Seidel et al. 2026, Nature Astro) .
Publications
@ESO
Atmospheric Composition
In a variety of works, I have explored the constituents of exoplanet atmospheres, providing the first detection of sodium in an ultra-hot Jupiter (Seidel et al. 2019) and in a hot Neptune (Seidel et al. 2022) using narrow-band spectroscopy. With this method and the established cross-correlation technique, we shed light on the localised chemistry of exoplanets and solved the Titanium conundrum:
