APEC Seminar (Astronomy - Particle Physics - Experimental Physics - Cosmology)

Speaker: Patrick Francois (Observatoire de Paris-Meudon)
Title: The search for the oldest stars in our Galaxy
Date (JST): Wed, Nov 16, 2016, 15:40 - 16:40
Place: Seminar Room A
Abstract: The extremely metal-poor stars (EMP) hold in their atmospheres the fossil record of the chemical composition of the early phases of the Galactic evolution. The chemical analysis of such objects provides important constraints on these early phases of the Universe. The chemical composition of EMP stars can give insights on the star-formation of low-mass stars from a metal-poor gas. EMP stars are very rare objects; to dig them out large amounts of data have to be considered.
I will present how we can find these most metal poor stars of our Galaxy and present the methods which allow to determine their chemical composition.