Volume 387, Number 2, May IV 2002
|Page(s)||396 - 405|
|Published online||13 May 2002|
Numerical simulations of the cosmic star formation history
Grupo de Astrofísica, C-XI Universidad Autónoma de Madrid, 28049 Madrid, Spain
2 Astrophysikalisches Institut Potsdam, An der Sternwarte 16, 14482, Germany
Corresponding author: Y. Ascasibar, firstname.lastname@example.org
Accepted: 27 February 2002
The cosmic star formation history in Cold Dark Matter dominated cosmological scenarios is studied by means of hydrodynamical numerical simulations. In particular, we explore a low density model with a Λ-term and two high density models with different power spectra, all of them being spatially flat. Our simulations employ a fully nonlinear N-body and Eulerian hydrodynamics algorithm with a model for star formation and supernovae feedback that depends on two phenomenological parameters determined in agreement with previous papers. We find a nearly constant star formation rate beyond , and we discuss which facts may determine the decrease in the SFR from to the present epoch. The Λ-term cosmology with realistic parameters for star formation and feedback best reproduces the observed star formation history.
Key words: galaxies: formation, stellar content / cosmology: observations, theory / stars: formation / methods: N-body simulations
© ESO, 2002
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.