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Modeling Mid-Infrared Diagnostics of Obscured Quasars and Starbursts
(IOP Publishing, 2013)
We analyze the link between active galactic nuclei (AGNs) and mid-infrared flux using dust radiative transfer calculations of starbursts realized in hydrodynamical simulations. Focusing on the effects of galaxy dust, we ...
Submillimetre galaxies in a hierarchical universe: number counts, redshift distribution and implications for the IMF
(Oxford University Press (OUP), 2012)
High-redshift submillimetre galaxies (SMGs) are some of the most rapidly star-forming galaxies in the Universe. Historically, galaxy formation models have had difficulty explaining the observed number counts of SMGs. We ...
Moving mesh cosmology: the hydrodynamics of galaxy formation
(Oxford University Press (OUP), 2012)
We present a detailed comparison between the well-known smoothed particle hydrodynamics (SPH) code gadget and the new moving-mesh code arepo on a number of hydrodynamical test problems. Through a variety of numerical ...
How to distinguish starbursts and quiescently star-forming galaxies: the ‘bimodal’ submillimetre galaxy population as a case study
(Oxford University Press (OUP), 2012)
In recent work, we have suggested that the high-redshift (z∼ 2–4) bright submillimetre galaxy (SMG) population is heterogeneous, with major mergers contributing both at early stages, where quiescently star-forming discs ...
Modeling the Dust Properties of z ~ 6 Quasars with ART2—All-Wavelength Radiative Transfer with Adaptive Refinement Tree
(IOP Publishing, 2008)
The detection of large quantities of dust in z ~ 6 quasars by infrared and radio surveys presents puzzles for the formation and evolution of dust in these early systems. Previously, Li et al. showed that luminous quasars ...
The total infrared luminosity may significantly overestimate the star formation rate of quenching and recently quenched galaxies
(Oxford University Press (OUP), 2014)
The total infrared (IR) luminosity is very useful for estimating the star formation rate (SFR) of galaxies, but converting the IR luminosity into an SFR relies on assumptions that do not hold for all galaxies. We test the ...
Mapping galaxy encounters in numerical simulations: the spatial extent of induced star formation
(Oxford University Press (OUP), 2015)
We employ a suite of 75 simulations of galaxies in idealized major mergers (stellar mass ratio ∼2.5:1), with a wide range of orbital parameters, to investigate the spatial extent of interaction-induced star formation. ...
The stellar mass assembly of galaxies in the Illustris simulation: growth by mergers and the spatial distribution of accreted stars
(Oxford University Press (OUP), 2016)
We use the Illustris simulation to study the relative contributions of in situ star formation and stellar accretion to the build-up of galaxies over an unprecedentedly wide range of masses (M* = 109-1012 M⊙), galaxy types, ...
Modelling galactic conformity with the colour–halo age relation in the Illustris simulation
(Oxford University Press (OUP), 2015)
Comparisons between observational surveys and galaxy formation models find that dark matter haloes’ mass can largely explain their galaxies’ stellar mass. However, it remains uncertain whether additional environmental ...
Recoiling black holes: prospects for detection and implications of spin alignment
(Oxford University Press (OUP), 2015)
Supermassive black hole (BH) mergers produce powerful gravitational wave emission. Asymmetry in this emission imparts a recoil kick to the merged BH, which can eject the BH from its host galaxy altogether. Recoiling BHs ...