Leader : Stéphane Charpinet
Deputy : Laurène Jouve
The research carried out by the members of the group PS2E aims to improve our understanding of stars, especially the closest of them, the Sun, as well as exoplanetary systems.
The origin of the Betelgeuse stellar wind revealed by the first 3D images
Except for the lightest elements (H, He and Li), atoms are formed inside the stars, throughout its life, by nuclear reactions. But they need to escape. Among the most efficient […]
Green light for the latest developments of the PLATO mission
ESA’s PLATO mission has been given the green light to continue its development after a successful critical review on January 11, 2022. PLATO, or PLAnetary Transits and Oscillations of stars, […]
THE ATMOSPHERE OF THE GIANT EXOPLANET TAU BOO B WAS INVESTIGATED WITH SPIROU
Using the SPIRou spectropolarimeter on the Canada-France-Hawaii Telescope (CFHT) in Hawaii, a team gathering core SPIRou scientists led by Stefan Pelletier, PhD student at Université de Montréal, studied the atmosphere of the gas giant exoplanet […]
The neighborhood of the Sun
Close enough to be observed with precision, the stars near our Sun constitute a unique laboratory for our understanding of stellar physics and the galaxy. A research team of the […]
SPHERE, twenty years of challenges and successes for exoplanets
The SPHERE consortium celebrates its 100th scientific publication, including the demographic study of exoplanets beyond Saturn’s orbit. The SPHERE (Spectro-Polarimetric High-Contrast Exo-planet REsearch) exoplanet imager, currently installed and operating at […]
How do giant planets become eccentric?
The vast majority of giant exoplanets observed (planets 100 times heavier than the Earth) have very “eccentric” orbits: their trajectory does not follow a circle, unlike the Earth, but an […]