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26 April 2024 |
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Article overview
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Semi-Analytic Galaxy Evolution (SAGE): Model Calibration and Basic Results | | Darren J. Croton
; Adam R. H. Stevens
; Chiara Tonini
; Thibault Garel
; Maksym Bernyk
; Antonio Bibiano
; Luke Hodkinson
; Simon J. Mutch
; Gregory B. Poole
; Genevieve M. Shattow
; | | Date: |
18 Jan 2016 | | Abstract: | This paper describes a new publicly available codebase for modelling galaxy
formation in a cosmological context, the "Semi-Analytic Galaxy Evolution"
model, or SAGE for short. SAGE is a significant update to that used in Croton
et al. (2006) and has been rebuilt to be modular and customisable. The model
will run on any N-body simulation whose trees are organised 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: 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. | | Source: | arXiv, 1601.4709 | | Services: | Forum | Review | PDF | Favorites | |
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