Le 5 mai 2017
De 10h30 à 12h00

Guillaume Fruet IPHC The knowledge of thermonuclear reaction rates is crucial to understand the...

Le 12 mai 2017
De 10h30 à 12h00

Federico Lelli ESO Garching  

Accueil
Accueil   >   Recherche   >   Séminaires et réunions   >   Séminaires hebdomadaires : Formation of local spiral galaxies

Formation of local spiral galaxies

Le 17 février 2017
De 10h30 à 12h00

Myriam Rodrigues

Observatoire de Paris


In the Λ-CDM paradigm, the Universe is structured at large scales by the hierarchical assembly of dark matter haloes. To be a coherent framework, this cosmological model has to predict the evolution of the Universe from the initial conditions up to the formation of today’s galaxies. This requires incorporating the baryons, and thus the physics of galaxies, into cosmological simulations. The nature of the main physical mechanisms shaping galaxies is far from reaching a consensus. In this talk I will review the possible path of galaxy formation, focusing on the case of spiral galaxies formation. When and how these discs were created is still unknown: did they grow by accreting gas from outside, or via the coalescence of smaller entities leading to the creation of more massive galaxies? I will discuss the set of observables that could refute either one of these two scenarios and present new constrains provided by the simulteanous analysis of spatially resolved spectroscopy and deep imagery.

Search & Find
avril 6 2017

Jérôme Pétri, maître de conférences à l'Observatoire astronomique de Strasbourg, est un des...

avril 25 2017

Dans le cadre de l’Opéra La Calisto  à l’Opéra National du Rhin, Caroline Bot a écrit deux textes...

déc. 17 2016

Suite à la proposition du conseil de l'Observatoire ce mercredi 14 décembre 2016, c'est...