Pr. Matthieu Gounelle
Museum National d’Histoire Naturelle (MNHN)
et équipe de Cosmochimie de l’IMPMC (Jussieu)
« Solar system genealogy revealed by extinct short-lived radionuclides in meteorites »
Short-lived radionuclides are radioactive elements with half-life significantly shorter than the age of the Solar System. Their decay products can be found in meteorites indicating that some of them such as 26Al (T1/2 = 0.74 Myr) or 60Fe (T1/2 = 2.6 Myr) were alive in the nascent Solar System. I will show how their past presence in the earliest formed solids strongly constrains the astrophysical context of the Sun’s formation.
Un café+croissant sera servi dans le hall à partir de 10h45.
Contact : etienne.snoeck chez cemes.fr