Du 18 juin 2018 au 22 juin 2018
Strasbourg, France

"The co-evolution of galaxies and the intergalactic medium during the first billion years of the...

Accueil   >   Recherche   >   Séminaires et réunions   >   Séminaires internes : 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
févr. 23 2018

 The nature of the massive Be star with strong and hard X-ray emission, gamma  Cassiopae, remains...

mars 12 2018

L'observatoire astronomique de Strasbourg a participé à l'événement Ose la Recherche organisé par...

févr. 5 2018

Une image multi-couleur extrêmement profonde du Télescope Canada-France-Hawaii (CFHT) apporte une...