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You are here: Home Science & Projects Deisa Extreme Computing Initiative Projects 2007 - 2008 Simulating Galaxy formation in the Local Universe

Simulating Galaxy formation in the Local Universe

Research Area Computational Cosmology
Principal Investigator(s) Gustavo Yepes
  • Universidad Autónoma de Madrid, Spain
  • Astrophysikalisches Institut Potsdam, Germany
  • Hebrew University of Jerusalem, Israel
  • New Mexico State University, USA
  • Jacobs University, Germany


This is a continuation of a previous DECI project with acronym SIMU-LU. In that project we proposed to make 1 billion particle high resolution N-body simulation of our Local Universe using constrained initial conditions which reproduce the observed matter distribution around our Milky Way galaxy. This simulation is the most realistic representation of the formation and evolution of the Universe in which we happen to live. We will be able to study in detail the formation and evolution of the Local Group itself and its merging history as long as the star formation history of each of the galaxies it is made of. In this new project we want to go a step further and incorporate the visible component into the simulation: gas and stars. To do that, we need to use hydrodynamical codes coupled with N-body codes together with detailed modelling of the physics associated to baryons: cooling and heating due to atomic interactions, star formation and feedbacks from exploding stars. The complication of the computations is higher than in the pure N-body case, but in return, we will be able to do a much better comparison with observations from the stars formed inside each galactic object.


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