Journal article

Simulated star formation rate functions at z similar to 4-7, and the role of feedback in high-z galaxies

E Tescari, A Katsianis, JSB Wyithe, K Dolag, L Tornatore, P Barai, M Viel, S Borgani

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | OXFORD UNIV PRESS | Published : 2014

Abstract

We study the role of feedback from supernovae (SN) and black holes in the evolution of the star formation rate function (SFRF) of z ̃ 4-7 galaxies. We use a new set of cosmological hydrodynamic simulations, Angus (AustraliaN GADGET-3 early Universe Simulations), run with a modified and improved version of the parallel TreePM-smoothed particle hydrodynamics code GADGET-3 called P-GADGET3(XXL), that includes a self-consistent implementation of stellar evolution and metal enrichment. In our simulations both SN-driven galactic winds and active galactic nuclei (AGN) act simultaneously in a complex interplay. The SFRF is insensitive to feedback prescription at z > 5, meaning that it cannot be used..

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Grants

Awarded by Australian Research Council Centre of Excellence for All-sky Astrophysics (CAASTRO)


Awarded by European Commission through the Marie Curie Initial Training Network CosmoComp


Funding Acknowledgements

The authors would like to thank Volker Springel for making available to us the non-public version of the GADGET-3 code. ET would like to thank Giuseppe Murante, James Bolton, Simon Mutch, Paul Lasky, Umberto Maio, Bartosz Pindor, Alexandro Saro and Mark Sargent for many insightful discussions. ET is also thankful for the hospitality provided by the University of Trieste and the Trieste Astronomical Observatory, where part of this work was completed. PB and MV are supported by the FP7 ERC Starting Grant 'cosmoIGM'. This research was conducted by the Australian Research Council Centre of Excellence for All-sky Astrophysics (CAASTRO), through project number CE110001020. This work was supported by the Flagship Allocation Scheme of the NCI National Facility at the ANU, by the European Commission's Framework Programme 7, through the Marie Curie Initial Training Network CosmoComp (PITN-GA-2009-238356), by the PRINMIUR09 'Tracing the growth of structures in the Universe', and by the PD51 INFN grant.