The high‐redshift galaxy population in hierarchical galaxy formation models

By Manfred G. Kitzbichler, Simon D. M. White. 2006

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We compare observations of the high-redshift galaxy population to the predictions of the galaxy formation model of Croton et al. and De Lucia & Blaizot. This model, implemented on the Millennium Simulation of the concordance Lambda cold dark matter cosmogony, introduces 'radio mode' feedback from the central galaxies of groups and clusters in order to obtain quantitative agreement with the luminosity, colour, morphology and clustering properties of the present-day galaxy population. Here we construct deep light cone surveys in order to compare model predictions to the observed counts and redshift distributions of distant galaxies, as well as to their inferred luminosity and mass functions out to redshift 5. With the exception of the mass functions, all these properties are sensitive to modelling of dust obscuration. A simple but plausible treatment agrees moderately well with most of the data. The predicted abundance of relatively massive (∼M * ) galaxies appears systematically high at high redshift, suggesting that such galaxies assemble earlier in this model than in the real Universe. An independent galaxy formation model implemented on the same simulation matches the observed mass functions slightly better, so the discrepancy probably reflects incomplete or inaccurate galaxy formation physics rather than problems with the underlying cosmogony.

Subfields: Astronomy and Astrophysics, Instrumentation

View Paper: https://www.semanticscholar.org/paper/c585394b8e38b5fc4f13582d4d43f7e168dd9d20

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Citations in the corpus

THE MAJOR AND MINOR GALAXY MERGER RATES AT z < 1.5 (2011, result): “…for the galaxy stellar mass functions (assuming a Chabrier initial mass function and Bruzual & Charlot 2003 SEDs) are found to be in good agreement with these same observed measurements at z < 1.5 and for galaxies with masses above ∼ 1010M⊙ (see Fontanot et al. 2009, Kitzbichler & White 2007).”
The Galaxy and its stellar halo: insights on their formation from a hybrid cosmological approach (2008, background): “Kitzbichler & White (2007) have recently shown that it also agrees reasonably well with the observed galaxy luminosity and mass functions at higher redshift.”
A unified multiwavelength model of galaxy formation (2015, methodology): “Previous studies of the evolution of the K-band LF using SA models include Bower et al. (2006); Kitzbichler & White (2007); Henriques et al. (2011); Somerville et al. (2012).”
A calibration of the relation between the abundance of close galaxy pairs and the rate of galaxy mergers (2008, methodology): “A more detailed account of the methods we use to produce mock observations from the Millennium Run semianalytic galaxy catalogues may be found in Kitzbichler & White (2007).”
THE GREATER IMPACT OF MERGERS ON THE GROWTH OF MASSIVE GALAXIES: IMPLICATIONS FOR MASS ASSEMBLY AND EVOLUTION SINCE z ≃ 1 (2009, background): “Stellar mass estimates for galaxies with photo-zs also suffer from the uncertainty in luminosity distance introduced by the photo-z error and the possibility of catastrophically wrong redshift information (Bundy et al. 2005; Kitzbichler & White 2007).”
Simulations of the galaxy population constrained by observations from z = 3 to the present day: implications for galactic winds and the fate of their ejecta (2012, methodology): “Kitzbichler & White (2007) found that although an earlier version of the Munich model agreed well with the observed B-band luminosity function at z = 0, it significantly underpredicted B-band luminosity functions at high redshift.”
THE HUBBLE SPACE TELESCOPE WIDE FIELD CAMERA 3 EARLY RELEASE SCIENCE DATA: PANCHROMATIC FAINT OBJECT COUNTS FOR 0.2–2 μm WAVELENGTH (2010, methodology): “Such models have been made, e.g., by Croton et al. (2006), de Lucia & Blaizot (2007), and Nagamine et al. (2005a, 2005b), and are discussed in further detail by e.g., Kitzbichler & White (2007), Monaco, Fontanot, & Taffoni (2007), and Nagamine (2006).”
THE SINS SURVEY: MODELING THE DYNAMICS OF z ∼ 2 GALAXIES AND THE HIGH-z TULLY–FISHER RELATION (2009, background): “…indicate that minor mergers and/or smooth accretion are likely to dominate the assembly of the high-z populations, while major mergers would play a role in the smaller fraction of hyperluminous sources (see e.g. Kitzbichler & White 2007, Naab et al. 2007, Guo & White 2008, Genel et al. 2008).”
Lightcone mock catalogues from semi-analytic models of galaxy formation – I. Construction and application to the BzK colour selection (2012, methodology): “Our scheme shares many features in common with the methods used by Blaizot et al. (2005) and Kitzbichler & White (2007), with some improvements.”
Cosmic Variance and Its Effect on the Luminosity Function Determination in Deep High-z Surveys (2007, methodology): “Pencil-Beam Tracing Our pencil-beam tracer is similar to the one developed by Kitzbichler & White (2007), but it is optimized for high z surveys, allowing us in particular to take advantage of the quasiconstant angular distance versus redshift relation.”
The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: modelling the clustering and halo occupation distribution of BOSS CMASS galaxies in the Final Data Release (2015, methodology): “This method has been implemented previously (see e.g. Blaizot et al. 2005; Kitzbichler & White 2007).”
MASS AND ENVIRONMENT AS DRIVERS OF GALAXY EVOLUTION. II. THE QUENCHING OF SATELLITE GALAXIES AS THE ORIGIN OF ENVIRONMENTAL EFFECTS (2011, background): “We pointed out in that paper that in the COSMOS mock catalogs of Kitzbichler & White (2007), which are based on semi-analytic modeling of the galaxy population within the Millenium cosmological dark matter simulation, the fraction of galaxies that are satellites of other galaxies, fsat(m,δ,t) is…”
Multiwavelength Study of Massive Galaxies at z~2. I. Star Formation and Galaxy Growth (2007, methodology): “Finally, we have used in this work the latest realization of galaxy formation models based on the Millennium simulations (Springel et al. 2005), in the form of mock light cones presented by Kitzbichler & White (2007).”
VERY HIGH GAS FRACTIONS AND EXTENDED GAS RESERVOIRS IN z = 1.5 DISK GALAXIES (2009, methodology): “Galaxy formation models based on numerical hydrodynamic codes (e.g., Finlator et al. 2006) and semianalytical renditions (e.g., Kitzbichler & White 2007; see Fig.”
The DEEP2 Galaxy Redshift Survey: Color and Luminosity Dependence of Galaxy Clustering at z ∼ 1 (2007, methodology): “Using an ensemble of 15 light-cones, each of which matches the geometry of one of the four DEEP2 survey fields (see Kitzbichler & White 2007, for further details) we measure the clustering of blue and red galaxies with the same MB and z ranges as our main DEEP2 color samples.”
MASS AND ENVIRONMENT AS DRIVERS OF GALAXY EVOLUTION IN SDSS AND zCOSMOS AND THE ORIGIN OF THE SCHECHTER FUNCTION (2010, background): “Examination of the 24 COSMOS mock catalogues (Kitzbichler & White 2007) shows that the fraction of galaxies, at a given mass, that are satellite galaxies, fsat, is strongly environment dependent, but, at fixed ρ or δ, is almost entirely independent of epoch, (at least since z = 0.7) and of galactic…”
EAZY: A Fast, Public Photometric Redshift Code (2008, background): “…relative fractions of red and blue galaxies at high redshift (Marchesini & van Dokkum 2007) and the simplified treatment of dust obscuration is probably inadequate (Kitzbichler & White 2007), the models should contain a more representative sample of galaxy SEDs over the broad redshift range 0 z .”