The stellar mass function and star formation rate-stellar mass relation of galaxies at z similar to 4-7
A Katsianis, E Tescari, JSB Wyithe
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | OXFORD UNIV PRESS | Published : 2015
We investigate the evolution of the star formation rate-stellar mass relation (SFR-M*) and galaxy stellar mass function (GSMF) of z ~ 4-7 galaxies, using cosmological simulations run with the smoothed particle hydrodynamics code P-GADGET3(XXL). We explore the effects of different feedback prescriptions (supernova-driven galactic winds and AGN feedback), initial stellar mass functions and metal cooling. We show that our fiducial model, with strong energy-driven winds and early active galactic nuclei (AGN) feedback, is able to reproduce the observed stellar mass function obtained from Lyman-break selected samples of star-forming galaxies at redshift 6 ≤ z ≤ 7. At z ~ 4, observed estimates of t..View full abstract
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Awarded by Australian Research Council Centre of Excellence for All-sky Astrophysics (CAASTRO)
We would like to thank the anonymous referee, Paul Angel, Simon Mutch, Kristian Finlator, Martin Stringer, Kyoung-soo Lee and Mark Sargent for insightful discussions and suggestions. The authors would also like to thank Volker Springel for making available to us the non-public version of the GADGET-3 code. ET is thankful for the hospitality provided by the University of Trieste and the Trieste Astronomical Observatory, where part of this work was completed. 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 NCI National Facility at the ANU.