May 29, 2018
From 12:45 until 13:45

François-Xavier Pineau (ObAS) Results of probabilistic cross-matches taking into account...

From June 18, 2018 until June 22, 2018
Strasbourg, France

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

Home
Home   >   Research   >   Seminars and meetings   >   Internal seminars : The first billion years of galaxy formation

The first billion years of galaxy formation

February 16, 2018
From 10:30 until 12:00

Pratika Dayal

RUG, Groningen

 

Galaxy formation in the first billion years mark a time of great upheaval in the history of the Universe: as the first sources of light, these galaxies ended the 'cosmic dark ages' and produced the first photons that could break apart the hydrogen atoms suffusing all of space starting the process of cosmic reionization. As the earliest building blocks, the shapeless ellipticals galaxies that formed in the first billion years also determine the physical properties of all subsequent galaxy populations. At the forefront of astronomical research, the past few years have seen cutting-edge instruments provide tantalising glimpses of such galaxies chaotically assembling in an infant Universe. I will show how this data has provided an unprecedented opportunity to pin down the reionization state of the Universe (at least in its last stages), understand their physical properties, and study the key physics driving their formation and evolution. Finally, I will try to give a flavour of how the assembly of early galaxies, accessible with the forthcoming James Webb Space Telescope and the associated reionization history, can provide a powerful testbed for Warm Dark Matter models.

Search & Find
Apr 25 2018

Astronomers worldwide are eagerly awaiting for April 25 2018. This is the date the European Space...

Apr 6 2018

  Deux chercheurs de l'Observatoire astronomique viennent de se voir décerner une distinction...

Mar 26 2018

Pour la première fois, une équipe de l’Observatoire Astronomique de Strasbourg vient de prédire...