Julien de Wit

About

Julien de Wit is a leading figure in the search for habitable exoplanets, specializing in the detection and atmospheric characterization of temperate Earth-sized worlds. As the Principal Investigator of the SPECULOOS project, he has spearheaded a global network of robotic telescopes—including the SPECULOOS Southern Observatory (SSO) at Paranal and the SPECULOOS Northern Observatory—specifically designed to hunt for terrestrial planets transiting the nearest and smallest ultracool dwarfs (M7 and later). His key contributions include defining the survey’s target list and strategy, demonstrating that these faint, nearby stars are ideal for atmospheric follow-up with next-generation observatories like the James Webb Space Telescope. With over 268 citations across his most-cited works, de Wit’s research has established a critical pathway for studying the atmospheres of potentially habitable exoplanets. His work has been instrumental in advancing the field from mere detection to detailed characterization, making him a pivotal figure in the quest to find life beyond our solar system.

Research Focus

Key Achievements

Top Papers

1. 1
   SPECULOOS: Ultracool dwarf transit survey

   105 citations · 2020
2. 2
   SPECULOOS: a network of robotic telescopes to hunt for terrestrial planets around the nearest ultracool dwarfs

   76 citations · 2018
3. 3
   The SPECULOOS Southern Observatory Begins its Hunt for Rocky Planets

   33 citations · 2018
4. 4
   SPECULOOS Northern Observatory: Searching for Red Worlds in the Northern Skies

   32 citations · 2022
5. 5
   SPECULOOS: a network of robotic telescopes to hunt for terrestrial planets around the nearest ultracool dwarfs

   19 citations · 2018
6. 6
   SPECULOOS -- Ultracool Dwarf Transit Survey: Target List and Strategy

   2 citations · 2020
7. 7
   SPECULOOS: five years hunting terrestrial planets around ultra-cool dwarfs

   1 citations · 2024

Key Collaborators

Contact & Links