Le 3 octobre 2025, Sylvie Vauclair, 10h45 à 12h45, Salle Jules Verne, OMP, site Belin Summary: Since the beginning of the 20th century, the scientific knowledge on the formation of the chemical elements in the Universe, from Big-Bang to Earth, have evolved in spectacular manner, thanks to close interconnections between atomic physics, « sub-atomic » and then […]
Le 12 décembre 2025, Charlotte Géhan, 10h45 à 12h45, Salle Jules Verne, OMP, site Belin Summary: The advent of ultra-high photometry space missions has revolutionized our understanding of the physical processes governing stellar evolution by enabling to directly probe stellar interiors through asteroseismology. CoRoT and Kepler have provided outstanding results for thousands of pulsating stars, […]
Le 28 novembre 2025, Christine Joblin & Hassan Sabbah, 10h45 à 12h45, Salle Jules Verne, OMP, site Belin Summary: With the groundbreaking infrared capabilities of the James Webb Space Telescope, we can now observe the emission from polycyclic aromatic hydrocarbons (PAHs) with unprecedented precision in star- and planet-forming regions. In parallel, sample return missions are […]
Le 14 novembre 2025, Florian Debras, 10h45 à 12h45, Salle Jules Verne, OMP, site Belin Summary: More than 5500 exoplanets have been discovered since 1995, the majority of which having roughly the size and mass of Jupiter as larger planets are easier to detect.In 20 years, our observation techniques have largely improved, and we can obtain reliable constraints […]
Le 7 novembre 2025, Iannis Dandouras, 10h45 à 12h45, Salle Jules Verne, OMP, site Belin Summary: Understanding the evolution of planetary atmospheres, and particularly the evolution of their composition and eventual habitability, is a major challenge. The evolution of an atmosphere is driven by its interactions with the planetary surface and interior, the influx from […]
le 21 novembre 2025, Natalie Webb, 10h45 à 12h45, salle Jules Verne, OMP, site Belin Summary: Large surveys such as Gaia, the Sloan Digital Sky Survey (SDSS), GALEX, 2MASS, NVSS, FIRST, XMM-Newton and Chandra, have catalogued many different stars and galaxies. Other more exotic objects can also be found such as black holes, neutron stars […]
le 10 novembre 2023, 10h45 à 12h45, David Tsang, salle Jules Verne, OMP, site Belin Resumé: I will discuss the basic structure of Neutron stars, including the Tolman-Oppenheimer-Volkoff equations, the dense matter equation of state, and the properties of the neutron star crust and core. I will then discuss how asteroseismic modes of a neutron star […]
le 20 octobre 2023, 10h45 à 12h45, Katia Ferrière, salle Jules Verne, OMP, site Belin Resumé: Magnetic fields are ubiquitous in the Universe. Most celestial bodies, from planets to stars to galaxies, appear to be magnetized. Even intergalactic space could be threaded by a magnetic field. Cosmic magnetic fields generally play an important role. They […]
le 13 octobre 2023, 10h45 à 12h45, Sylvestre Maurice, salle Jules Verne, OMP, site Belin Resumé: