Physics of the Sun, Stars and 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 […]
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 […]
SPIRou, the new spectropolarimeter / high-precision velocimeter recently installed on the 3.6m Canada-France-Hawaii Telescope (CFHT), allowed to measure the mass and density of a close-in Neptune-like planet orbiting the hugely-active […]
Thematic Groups: PEPS et PS2EScientific Leader: Frédéric PitoutMain OSU: Observatoire Midi-Pyrénées CLIMSO DB Website Contexte / Background CLIMSO is a National Observation Service (SNO) labeled in the national action of […]
Exoplanets are on a roll! This is evidenced by the 2019 Nobel Prize in Physics awarded to the Swiss Michel Mayor and Didier Queloz for their discovery of the first […]
Leader : Jérôme BallotDeputy : Clément Baruteau The research carried out by the members of the group PS2E aims to improve our understanding of stars, especially the closest of them, […]
Recent observations of protoplanetary disks, these planetary systems in formation, frequently reveal sequences of dark and bright rings. While these structures are often attributed to multiple planets, numerical simulations show […]
Using ESO’s Very Large Telescope (VLT), astronomers have captured the unprecedented dimming of Betelgeuse, a red supergiant star in the constellation of Orion. The stunning new images of the star’s […]
Altaïr, a bright star in the summer sky, is known for its very fast rotation. The centrifugal effect is such that its polar radius is 20% smaller than its equatorial […]