Wardenier et al. (2025) — ApJ
"From pre-transit to post-eclipse: investigating the impact of 3D temperature, chemistry, and dynamics on high-resolution emission spectra of the ultra-hot Jupiter WASP-76b"
DOI: 10.48550/arXiv.2502.01606
Dr. Joost Wardenier
Planetary Astrophysicist @ Université de Montréal
Bonjour/Hi and welcome to my webpage! I am a Trottier Postdoctoral Fellow at the Institute for Research on Exoplanets (iREx), based at Université de Montréal. My research focuses on the characterization of the 3D structure of exoplanet atmospheres — in particular those of ultra-hot Jupiters. In this context, I use a combination of computer models and telescope data to bridge the gap between theory and observation. I am the PI of a JWST cycle 3 program that observed the thermal phase curve of WASP-76b and a JWST cycle 4 program that will target the secondary eclipse of KELT-20b. Furthermore, I serve as a science-team member within the NIRPS consortium.
Before moving to Canada, I completed my PhD in Atmospheric, Oceanic, and Planetary Physics at the University of Oxford. My thesis was titled "Exploring the 3D structure of ultra-hot Jupiters using ground-based high-resolution spectroscopy". I obtained two bachelor's degrees (Physics and Astronomy) and a master's degree (Astrophysics) from Leiden University in the Netherlands. During my master's, I was a visiting student at TU Delft and the Max Planck Institute for Astronomy (MPIA). In 2019, I was awarded the prize for best astronomy master's thesis in the Netherlands by the Royal Holland Society of Sciences and Humanities. Please do not hesitate to reach out if you have questions about my work or if you would like to collaborate!First-authored papers
The list below provides an overview of my first-authored publications, which mainly focus on ground-based high-resolution spectroscopy. Clicking the figures will take you to the paper's webpage on the publisher's site. All papers are also available on ArXiv.
Wardenier et al. (2024) — PASP
"Phase-resolving the absorption signatures of water and carbon monoxide in the atmosphere of the ultra-hot Jupiter WASP-121b with GEMINI-S/IGRINS"
DOI: 10.1088/1538-3873/ad5c9f
Wardenier et al. (2023) — MNRAS
"Modelling the effect of 3D temperature and chemistry on the cross-correlation signal of transiting ultra-hot Jupiters: a study of 5 chemical species on WASP-76b"
DOI: 10.1093/mnras/stad2586
Wardenier et al. (2022) — MNRAS
"All along the line of sight: a closer look at opening angles and absorption regions in the atmospheres of transiting exoplanets"
DOI: 10.1093/mnras/stab3432
Wardenier et al. (2021) — MNRAS
"Decomposing the iron cross-correlation signal of the ultra-hot Jupiter WASP-76b in transmission using 3D Monte Carlo radiative transfer"
DOI: 10.1093/mnras/stab1797
Contact
Dr. Joost P. Wardenier
Trottier Institute for Research on Exoplanets (iREx)
Campus MIL, Université de Montréal
1375 Avenue Thérèse-Lavoie-Roux, Montréal, QC H2V 0B3, Canada
joost [dot] wardenier [at] umontreal [dot] ca
ORCID: 0000-0003-3191-2486