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FLAMINGO: Calibrating large cosmological hydrodynamical simulations with machine learning
Roi Kugel, Joop Schaye, Matthieu Schaller +17
To fully take advantage of the data provided by large-scale structure surveys, we need to quantify the potential impact of baryonic effects, such as feedback from active galactic n…
The FLAMINGO project: cosmological hydrodynamical simulations for large-scale structure and galaxy cluster surveys
Joop Schaye, Roi Kugel, Matthieu Schaller +17
We introduce the Virgo Consortium's FLAMINGO suite of hydrodynamical simulations for cosmology and galaxy cluster physics. To ensure the simulations are sufficiently realistic for…
Lyman-alpha emitters in a cosmological volume II: the impact of the intergalactic medium
S. Gurung-Lopez, Alvaro A. Orsi, Silvia Bonoli +3
In the near future galaxy surveys will target Lyman alpha emitting galaxies (LAEs) to unveil the nature of the dark energy. It has been suggested that the observability of LAEs is…
Lyα emitters in a cosmological volume I: the impact of radiative transfer
Siddhartha Gurung-López, Álvaro A. Orsi, Silvia Bonoli +2
Lyman-α emitters (LAEs) are a promising target to probe the large scale structure of the Universe at high redshifts, . However, their detection is sensitive to radiativ…
Understanding the non-linear clustering of high redshift galaxies
Charles Jose, Carlton M. Baugh, Cedric G. Lacey +1
We incorporate the non-linear clustering of dark matter halos, as modelled by Jose et al. (2016) into the halo model to better understand the clustering of Lyman break galaxies (LB…
Reionisation in sterile neutrino cosmologies
Sownak Bose, Carlos S. Frenk, Hou Jun +2
We investigate the process of reionisation in a model in which the dark matter is a warm elementary particle such as a sterile neutrino. We focus on models that are consistent with…
The clustering of dark matter halos: scale-dependent bias on quasi-linear scales
Charles Jose, Cedric G. Lacey, Carlton M. Baugh
We investigate the spatial clustering of dark matter halos, collapsing from fluctuations, in the redshift range using N-body simulations. The halo bias of high reds…
The Clustering Evolution of Dusty Star-Forming Galaxies
William I. Cowley, Cedric G. Lacey, Carlton M. Baugh +1
We present predictions for the clustering of galaxies selected by their emission at far infra-red (FIR) and sub-millimetre wavelengths. This includes the first predictions for the…
A new methodology to test galaxy formation models using the dependence of clustering on stellar mass
David J. R. Campbell, Carlton M. Baugh, Peter D. Mitchell +6
We present predictions for the two-point correlation function of galaxy clustering as a function of stellar mass, computed using two new versions of the GALFORM semi-analytic galax…
Simulated observations of sub-millimetre galaxies: the impact of single-dish resolution and field variance
William I. Cowley, Cedric G. Lacey, Carlton M. Baugh +1
Recent observational evidence suggests that the coarse angular resolution ( FWHM) of single-dish telescopes at sub-mm wavelengths has biased the observed galaxy number cou…
The evolution of the star forming sequence in hierarchical galaxy formation models
Peter D. Mitchell, Cedric G. Lacey, Shaun Cole +1
It has been argued that the specific star formation rates of star forming galaxies inferred from observational data decline more rapidly below z = 2 than is predicted by hierarchic…
Herschel-ATLAS/GAMA:How does the far-IR luminosity function depend on galaxy group properties?
Qi Guo, Cedric Lacey, Peder Norberg +14
We use the Herschel ATLAS (H-ATLAS) Phase I data to study the conditional luminosity function of far-IR (250 um) selected galaxies in optically-selected galaxy groups from the GAMA…
Clustering of Extremely Red Objects in Elais-N1 from the UKIDSS DXS with optical photometry from Pan-STARRS1 and Subaru
Jae-Woo Kim, Alastair C. Edge, David A. Wake +11
We measure the angular clustering of 33 415 extremely red objects (EROs) in the Elais-N1 field covering 5.33 deg, which cover the redshift range to . This sample w…
Extending the halo mass resolution of -body simulations
Raul E. Angulo, Carlton M. Baugh, Carlos S. Frenk +1
We present a scheme to extend the halo mass resolution of N-body simulations of the hierarchical clustering of dark matter. The method uses the density field of the simulation to p…
Which galaxies dominate the neutral gas content of the Universe?
Claudia del P. Lagos, C. M. Baugh, M. A. Zwaan +5
We study the contribution of galaxies with different properties to the global densities of star formation rate (SFR), atomic (HI) and molecular hydrogen (H2) as a function of redsh…
The cross-power spectrum between 21cm emission and galaxies in hierarchical galaxy formation models
Jaehong Park, Han-Seek Kim, J. Stuart B. Wyithe +1
The correlation between 21cm fluctuations and galaxies is sensitive to the astrophysical properties of the galaxies that drove reionization. Thus, detailed measurements of the cros…
A new model of galaxy formation: How sensitive are predicted galaxy luminosities to the choice of SPS model?
V. Gonzalez-Perez, C. G. Lacey, C. M. Baugh +4
We present a new release of the GALFORM semi-analytical model of galaxy formation and evolution, which exploits a Millennium Simulation-class N-body run performed with the WMAP7 co…
Constraints on black hole fuelling modes from the clustering of X-ray AGN
N. Fanidakis, A. Georgakakis, G. Mountrichas +6
We present a clustering analysis of X-ray selected AGN by compiling X-ray samples from the literature and re-estimating the dark matter (DM) halo masses of AGN in a uniform manner.…
The most luminous quasars do not live in the most massive dark matter haloes at any redshift
N. Fanidakis, A. V. Maccio, C. M. Baugh +2
Quasars represent the brightest Active Galactic Nuclei (AGN) in the Universe and are thought to indicate the location of prodigiously growing Black Holes (BHs), with luminosities a…
Single Colour Diagnostics of the Mass-to-light Ratio: Predictions from Galaxy Formation Models
Stephen M. Wilkins, Violeta Gonzalez-Perez, Carlton M. Baugh +2
Accurate galaxy stellar masses are crucial to better understand the physical mechanisms driving the galaxy formation process. We use synthetic star formation and metal enrichment h…
Variation in the escape fraction of ionising photons from galaxies and the redshifted 21-cm power spectrum during reionization
Han-Seek Kim, J. Stuart B. Wyithe, Jaehong Park +1
The observed power spectrum of redshifted 21cm fluctuations is known to be sensitive to the astrophysical properties of the galaxies that drove reionization. Thus, detailed measure…
How well can we really estimate the stellar masses of galaxies from broadband photometry?
P. D. Mitchell, C. G. Lacey, C. M. Baugh +1
The estimated stellar masses of galaxies are widely used to characterize how the galaxy population evolves over cosmic time. If stellar masses can be estimated in a robust manner,…
A dynamical model of supernova feedback: gas outflows from the interstellar medium
Claudia del P. Lagos, Cedric G. Lacey, Carlton M. Baugh
We present a dynamical model of supernova feedback which follows the evolution of pressurised bubbles driven by supernovae in a multi-phase interstellar medium (ISM). The bubbles a…
Simulations and modelling of the ISM in galaxies
Claudia del P. Lagos, Cedric G. Lacey, Carlton M. Baugh
The latest observations of molecular gas and the atomic hydrogen content of local and high-redshift galaxies, coupled with how these correlate with star formation activity, have re…