TY - JOUR
T1 - Semi-Analytic Galaxy Evolution (SAGE)
T2 - Model Calibration and Basic Results
AU - Croton, Darren J.
AU - Stevens, Adam R. H.
AU - Tonini, Chiara
AU - Garel, Thibault
AU - Bernyk, Maksym
AU - Bibiano, Antonio
AU - Hodkinson, Luke
AU - Mutch, Simon J.
AU - Poole, Gregory B.
AU - Shattow, Genevieve M.
PY - 2016/2
Y1 - 2016/2
N2 - 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 feedback, and reincorporation via the galactic fountain; a new gas cooling-radio mode active galactic nucleus (AGN) heating cycle; AGN feedback in the quasar mode; a new treatment of gas in satellite galaxies; and galaxy mergers, disruption, and the build-up of intra-cluster stars. Throughout, we show the results of a common default parameterization on each simulation, with a focus on the local galaxy population....
AB - 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 feedback, and reincorporation via the galactic fountain; a new gas cooling-radio mode active galactic nucleus (AGN) heating cycle; AGN feedback in the quasar mode; a new treatment of gas in satellite galaxies; and galaxy mergers, disruption, and the build-up of intra-cluster stars. Throughout, we show the results of a common default parameterization on each simulation, with a focus on the local galaxy population....
U2 - 10.3847/0067-0049/222/2/22
DO - 10.3847/0067-0049/222/2/22
M3 - Article
SN - 0067-0049
VL - 222
JO - The Astrophysical Journal Supplement Series
JF - The Astrophysical Journal Supplement Series
IS - 2
M1 - 22
ER -