The self-induced secular evolution of gravitating systems
Le 1 mars 2019 De 10h30 à 12h00 Christophe Pichon...
18 février 2020
18 février 2020
Physical processes behind the formation of high-mass stars and low-mass stars
Le 22 février 2019 De 10h30 à 12h00 Fabien Louvet (Universidad de Chile) Star formation is a key astrophysical process. At a small scale, it governs the settling of planetary systems, and the complex chemistry allowing the emergence of life. At large scale, star formation...
18 février 2020
The exciting life of old stellar clusters
Le 15 février 2019 De 10h30 à 12h00 William Chantereau (Liverpool) Globular clusters are among the oldest and brightest structures in the Universe, and are therefore witnesses of processes from the early up to the present-day Universe. In turn, they play a major role in...
18 février 2020
Milky Way models in the Gaia era: shaping stellar populations in phase-space and their chemical composition
Le 8 février 2019 De 10h30 à 12h00 Sergey Khoperskov (MPE) I will discuss the formation history of the stellar components in the Milky Way-type galaxies based on self-consistent chemodynamical galaxy formation models. Our hydrodynamical/N-body simulations initially form...
18 février 2020
A renewed look at Globular Clusters in the era of precision astrometry
Le 1 février 2019 De 10h30 à 12h00 Paolo Bianchini (ObAS) The traditional picture of Globular Clusters (GCs) as simple stellar systems is being radically revolutionized by the synergistic efforts of theoretical advances and precision astrometry led by Gaia DR2. We now...
18 février 2020
Probing galaxy formation with rotation curves
Le 18 janvier 2019 De 10h30 à 12h00 Lorenzo Posti (ObAS) Mass and angular momentum (AM) are the two pivotal quantities defining a whole range of structural properties of galaxies, such as their morphology. While cosmology has clear predictions on how much baryons should be...
18 février 2020
Séminaire au Collège de France
Le 14 janvier 2019 De 17h45 à 18h45 Dominique Aubert, professeur à l'Observatoire astronomique de Strasbourg, a donné le 14 janvier 2019 un séminaire au Collège de France sur la simulation de la formation des premières structures. Retrouvez sa présentation ainsi que le...
18 février 2020
Interacting galaxies in MOND
Le 14 décembre 2018 De 10h30 à 12h00 Michal Bilek (ObAS) The purpose of this talk will be to introduce myself and my work so far. Modified Newtonian Dynamics (aka MOND) is the leading alternative to the dark matter hypothesis in galaxies, suggesting a modification of the...
18 février 2020
Gravitational probes of dark matter
Le 7 décembre 2018 De 10h30 à 12h00 Aurel Schneider (ETH Zurich) I will discuss the most promising gravitational probes to constrain non-cold or collisional dark matter scenarios. This includes dwarf galaxy statistics, weak lensing, and the global 21-cm signal....
18 février 2020
The Galactic Disk in Action Space as seen by Gaia
Le 30 novembre 2018 De 10h30 à 12h00 Wilma Trick MPA Garching The second Gaia data release from April 2018 has revealed an astounding amount of non-axisymmetric stellar substructure in the Milky Way. In this talk, I will present the orbit structure of the Galactic disk...