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Le 22 novembre 2019 De 10h30 à 12h00 Stefan Jordan ARI Heidelberg Since 2014, ESA's Gaia satellite measures the positions of a huge number of stars of our Milky Way in order to gain a better understanding of the structure and evolution of our home galaxy. In recent...
Le 15 novembre 2019 De 10h30 à 12h00 Marc-Antoine Miville-Deschênes CEA Today we fundamentally do not understand the process of formation of collapsed structures in the Universe. How the injection of energy, mass, and metals from stars and galaxies play against the forces...
Le 8 novembre 2019 De 10h30 à 12h00 Melaine Saillenfest IMCCE Trans-Neptunian objects have complex orbital dynamics involving mechanisms as diverse as close encounters with Neptune, chaotic scattering driven by resonance overlap, secular effects from the giant planets,...
Le 25 octobre 2019 De 10h30 à 12h00 Sarrvesh Sridhar Astron Non-thermal radio continuum emission is an excellent tracer of magnetic fields in galaxies. Historically, observations of galaxies at low radio frequencies (below 1 GHz) have suffered from poor angular resolution...
Le 18 octobre 2019 De 10h30 à 12h00 Jackson Said University of Malta The standard model of cosmology has shown remarkable success in explaining cosmological observations in recent decades. This model consists of Einstein's theory of general relativity, the standard model of...
Le 11 octobre 2019 De 10h30 à 12h00 Jonathan Freundlich Hebrew University Galaxy history is marked by a peak of star formation ten billion years ago and a subsequent drop of the star formation rate (SFR) by an order of magnitude. To understand this evolution, it is crucial...
Le 4 octobre 2019 De 10h30 à 12h00 Guillaume Thomas NRC Herzberg Victoria The stellar halo of our Galaxy is mostly formed by stars that were initially lying in dwarf galaxies and globular clusters, which have been disrupted by the tidal field of the Milky Way. Therefore,...
Le 27 septembre 2019 De 10h30 à 12h00 Justin Read University of Surrey Dark matter makes up most of the mass of the Universe but remains mysterious. I discuss recent progress in constraining its properties by measuring its distribution in the Universe from tiny dwarf...
Le 20 septembre 2019 De 10h30 à 12h00 Florent Renaud Lund In the Gaia era, and with more and more complete surveys, the assembly of the Milky Way is being scrutinized with an always increasing accuracy. The kinematic and chemical properties of stellar populations are...
Le 13 septembre 2019 De 10h30 à 12h00 Jean-Loup Puget IAS/ENS Les données de la mission Planck ont vérifié plusieurs prédictions génériques du paradigme d'inflation qui donne une base physique aux conditions initiales du modèle historique du "big bang". Les...