MultiDark-Galaxies: data release and first results

Abstract

We present the public release of the MultiDark-Galaxies: three distinct galaxy catalogues derived from one of the Planck cosmology MultiDark simulations (i.e. MDPL2, with a volume of (1 Gpc/$h$)${}^3$ and mass resolution of $1.5\times 10^9{M}_{\odot }/h$) by applying the semi-analytic models GALACTICUS, SAG, and SAGE to it. We compare the three models and their conformity with observational data for a selection of fundamental properties of galaxies like stellar mass function, star formation rate, cold gas fractions, and metallicities - noting that they sometimes perform differently reflecting model designs and calibrations. We have further selected galaxy subsamples of the catalogues by number densities in stellar mass, cold gas mass, and star formation rate in order to study the clustering statistics of galaxies. We show that despite different treatment of orphan galaxies, i.e. galaxies that lost their dark-matter host halo due to the finite mass resolution of the N-body simulation or tidal stripping, the clustering signal is comparable, and reproduces the observations in all three models - in particular when selecting samples based upon stellar mass. Our catalogues provide a powerful tool to study galaxy formation within a volume comparable to those probed by on-going and future photometric and redshift surveys. All model data consisting of a range of galaxy properties - including broad-band SDSS magnitudes - are publicly available.

29 pages, 16 figures, 8 tables, accepted for publication in MNRAS. All data incl. the complete galaxy catalogues for all models are publicly available from the CosmoSim database (http://www.cosmosim.org); a selected set of galaxy properties is available via the Skies & Universes website (http://www.skiesanduniverses.org)

References in corpus (26)

• Cosmic Star Formation History
• The EAGLE project: Simulating the evolution and assembly of galaxies and their environments
• The propagation of uncertainties in stellar population synthesis modeling I: The relevance of uncertain aspects of stellar evolution and the IMF to the derived physical properties of galaxies
• Properties of galaxies reproduced by a hydrodynamic simulation
• Galactic chemical evolution: Carbon through Zinc
• The Auriga Project: the properties and formation mechanisms of disc galaxies across cosmic time
• PRIMUS: Constraints on Star Formation Quenching and Galaxy Merging, and the Evolution of the Stellar Mass Function From z=0-1
• Galaxy Pairs in the Sloan Digital Sky Survey I: Star Formation, AGN Fraction, and the Luminosity/Mass-Metallicity Relation
• A primer on hierarchical galaxy formation: the semi-analytical approach
• Structure and star formation in galaxies out to z=3: evidence for surface density dependent evolution and upsizing
• The 2013 Release of Cloudy
• Ram pressure stripping the hot gaseous halos of galaxies in groups and clusters
• The Current Status of Galaxy Formation
• Natural Downsizing in Hierarchical Galaxy Formation
• The pseudo-evolution of halo mass
• The Tully-Fisher Relation and Its Residuals for a Broadly Selected Sample of Galaxies
• Effects of AGN feedback on LCDM galaxies
• A First Attempt to Calibrate the Baryonic Tully-Fisher Relation with Gas Dominated Galaxies
• Metal Enrichment of the ICM: a 3-D Picture of Chemical and Dynamical Properties
• Building disc structure and galaxy properties through angular momentum: The DARK SAGE semi-analytic model
• Monte Carlo Markov Chain Parameter Estimation in Semi-Analytic Models of Galaxy Formation
• Ram pressure stripping in a galaxy formation model. I. A novel numerical approach
• The WiggleZ Dark Energy Survey: measuring the cosmic growth rate with the two-point galaxy correlation function
• The evolution of the star forming sequence in hierarchical galaxy formation models
• Properties of Submillimeter Galaxies in a Semi-analytic Model using the "Count Matching" Approach: Application to the ECDF-S
• Constraints on galaxy formation models from the galaxy stellar mass function and its evolution

Cited by in corpus (1)

• A semi-analytical perspective on massive galaxies at $z\sim 0.55$