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Neutral Gas in Galaxies: the interstellar medium and outflows
  Astronomy and astrophysics

Friday 07 March 2014
from 10:30 to 11:00
at FA31
Speaker : Claudia Lagos (ESO)
Abstract : In this talk I will summarise the main developments of the last years in the modelling of neutral gas in cosmological models of galaxy formation and evolution, which has allowed the distinction between atomic and molecular gas in the interstellar medium and realistic models of star formation and feedback to be incorporated. This modelling has allowed, for example, to reconcile the weak evolution in the atomic hydrogen cosmic density with the strong evolution in star formation rate, and the interpretation of scaling relations between the neutral gas and other galaxy components. In addition to this, I will show how through a hydrodynamic description of the growth of supernovae driven bubbles in this multi-phase interstellar medium, we are able to predict outflow rates and velocities in good agreement with those observed in the local and high-redshift Universe.

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