Discovery of an extrasolar system including a cool sub-Neptune
Since the first discovery of a planet orbiting a star other than the Sun in 1995, over 5000 exoplanets have been detected. However, small, light planets orbiting far from their […]
PS2E
Physics of the Sun, Stars and Exoplanets
Watch out for changing stellar magnetic fields
The 11-year solar activity cycle is a well-known phenomenon, during which the intensity of the Sun’s magnetic field varies and its polarities reverse. Over the past 30 years, astronomers have […]
Small planets in orbit around red dwarf stars have been detected
An international team, involving CNRS-INSU laboratories, has conducted a study that led to the discovery and characterization of a new planet named TOI-1695b. Barely twice as big and six times […]
Michel Rieutord, astrophysicist at IRAP, laureate of the prestigious ERC Synergy Grant
The European Research Council (ERC) has just awarded this prestigious grant to Michel Rieutord, professor at the University Toulouse III – Paul Sabatier at the Institute for Research in Astrophysics […]
Intense magnetic fields detected for the first time in the core of red giant stars
The magnetic field plays a central role in the life of a star. It influences its evolution through the internal mixing of chemical elements. However, because stellar matter is opaque, […]
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 […]