SEMI-ANALYTIC GALAXY EVOLUTION (SAGE): MODEL CALIBRATION AND BASIC RESULTS

This paper describes a new publicly available codebase for modeling galaxy formation in a cosmological context, the "Semi-Analytic Galaxy Evolution" model, or sage for short.5 sage is a significant update to the 2006 model of Croton et al. and has been rebuilt to be modular and customizable. The model will run on any N-body simulation whose trees are organized in a supported format and contain a minimum set of basic halo properties. In this work, we present the baryonic prescriptions implemented in sage to describe the formation and evolution of galaxies, and their calibration for three N-body simulations: Millennium, Bolshoi, and GiggleZ. Updated physics include the following: gas accretion, ejection due to…

• NS
  National Science Foundation
• UD
  U.S. Department of Energy
• NA
  National Aeronautics and Space Administration
• AP
  Alfred P. Sloan Foundation
• AN
  Agence Nationale de la Recherche
• SU
  Swinburne University of Technology
• OO
  Office of Science
• AR
  Ames Research Center
• SA
  Smithsonian Astrophysical Observatory