Journal article

The Relation between Star-Formation Rate and Stellar Mass of Galaxies at z similar to 1-4

A Katsianis, E Tescari, JSB Wyithe



The relation between the star-formation Rate and stellar mass (M-) of galaxies represents a fundamental constraint on galaxy formation, and has been studied extensively both in observations and cosmological hydrodynamic simulations. However, the observed amplitude of the star-formation rate-stellar mass relation has not been successfully reproduced in simulations, indicating either that the halo accretion history and baryonic physics are poorly understood/modelled or that observations contain biases. In this paper, we examine the evolution of the SFR-M- relation of z - 1-4 galaxies and display the inconsistency between observed relations that are obtained using different techniques. We emplo..

View full abstract


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

Awarded by CONICYT-FONDECYT fellowship

Funding Acknowledgements

The authors would like to thank Amanda Bauer, Naveen Reddy, Masaru Kajisawa, and Yusei Koyama for insightful discussions and for kindly sharing their observational results with us. In addition, we would like to thank Martin Sparre and Michelle Furlong for sharing their numerical results. We would also like to thank Volker Springel for making available to us the non-public version of the GADGET-3 code. Finally, we are particularly grateful to Mark Sargent for his suggestions. 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, the Melbourne International Research Scholarship (MIRS) scholarship, and the Albert Shimmins Fund-writing-up award provided by the University of Melbourne. AK is supported by the CONICYT-FONDECYT fellowship (project number: 3160049).