Philippe
Stée,
President of the Observatoire de Paris – PSL
Philippe
Stée
President of the Observatoire de Paris – PSL Born in 1968, astrophysicist Philippe Stée is a Research Director at the CNRS. He conducts his scientific activities at the Lagrange laboratory of the Observatoire de la Côte d’Azur, which he directed from 2016 to 2023. His research focuses on the physics of hot stars and circumstellar disks, as well as on the development and use of optical interferometry techniques, fields in which he has gained international recognition. His work notably relies on the use of major optical and infrared interferometry instruments, including AMBER, MIDI and MATISSE at the European Southern Observatory’s Very Large Telescope Interferometer (VLTI) in Chile, as well as the VEGA instrument installed on the CHARA interferometric array at Mount Wilson (United States), for which he served as co-investigator. Beyond his scientific work, he has been strongly involved in collective and governance responsibilities, notably as director of the Lagrange laboratory and as scientific delegate at the CNRS National Institute for Earth Sciences and Astronomy (INSU). He has been appointed President of the Observatoire de Paris – PSL for a five-year term starting on March 13, 2026.
President of the Observatoire de Paris – PSL Born in 1968, astrophysicist Philippe Stée is a Research Director at the CNRS. He conducts his scientific activities at the Lagrange laboratory of the Observatoire de la Côte d’Azur, which he directed from 2016 to 2023. His research focuses on the physics of hot stars and circumstellar disks, as well as on the development and use of optical interferometry techniques, fields in which he has gained international recognition. His work notably relies on the use of major optical and infrared interferometry instruments, including AMBER, MIDI and MATISSE at the European Southern Observatory’s Very Large Telescope Interferometer (VLTI) in Chile, as well as the VEGA instrument installed on the CHARA interferometric array at Mount Wilson (United States), for which he served as co-investigator. Beyond his scientific work, he has been strongly involved in collective and governance responsibilities, notably as director of the Lagrange laboratory and as scientific delegate at the CNRS National Institute for Earth Sciences and Astronomy (INSU). He has been appointed President of the Observatoire de Paris – PSL for a five-year term starting on March 13, 2026.