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Predicting the neutral hydrogen content of galaxies from optical data using machine learning
(Oxford University Press, 2018)
We develop a machine learning-based framework to predict the Hi content of galaxies using
more straightforwardly observable quantities such as optical photometry and environmental
parameters. We train the algorithm on z ...
The complex physics of dusty star-forming galaxies at high redshifts as revealed by Herschel and Spitzer
(IOP Publishing, 2013)
We combine far-infrared photometry from Herschel (PEP/HerMES) with deep mid-infrared spectroscopy from
Spitzer to investigate the nature and the mass assembly history of a sample of 31 luminous and ultraluminous
infrared ...
nIFTy galaxy cluster simulations – V. Investigation of the cluster infall region
(Oxford University Press, 2016)
We examine the properties of the galaxies and dark matter haloes residing in the cluster
infall region surrounding the simulated cold dark matter galaxy cluster studied by Elahi
et al. at z = 0. The 1.1 × 1015 h−1M ...
Improving photometric redshift estimation using GPz: size information, post processing and improved photometry
(Oxford University Press, 2017)
The next generation of large-scale imaging surveys (such as those conducted with the Large Synoptic Survey Telescope and Euclid) will require accurate photometric redshifts in order to optimally extract cosmological ...
MUFASA: The strength and evolution of galaxy conformity in various tracers
(Oxford University Press, 2017)
We investigate galaxy conformity using the Mufasa cosmological hydrodynamical
simulation. We show a bimodal distribution in galaxy colour with radius, albeit
with too many low-mass quenched satellite galaxies compared ...
Aligned metal absorbers and the ultraviolet background at the end of reionization
(Oxford University Press, 2018)
We use observations of spatially-aligned C ii, C iv, Si ii, Si iv, and O i absorbers to probe the
slope and intensity of the ultraviolet background (UVB) at z ∼ 6. We accom- plish this by comparing
observations with ...
Calibrating the James Webb Space telescope filters as star formation rate indicators
(American Astronomical Society, 2018)
We have calibrated the 6.5m James Webb Space Telescope (JWST) mid-infrared (MIR) filters as star formation rate
(SFR) indicators, using JWST photometry synthesized from Spitzer spectra of 49 low-redshift galaxies, which ...
Herschel-ATLAS/GAMA: What determines the far-infrared properties of radio galaxies?
(OUP, 2013)
We perform a stacking analysis of Herschel Astrophysical Terahertz Large Area Survey
(H-ATLAS) data in order to obtain isothermal dust temperatures and rest-frame luminosities
at 250 µm (L250), for a well-defined sample ...
Herschel-atlas/Gama: a difference between star formation rates in strong-line and weak-line radio galaxies
(OUP, 2013)
We have constructed a sample of radio-loud objects with optical spectroscopy from the Galaxy
and Mass Assembly (GAMA) project over the Herschel Astrophysical Terahertz Large Area
Survey (Herschel-ATLAS) Phase 1 fields. ...
Galaxy and mass assembly: evolution of the Hα luminosity function and star formation rate density up to z < 0.35
(OUP, 2013)
Measurements of the low-z Hα luminosity function, Φ, have a large dispersion in the local number density of sources (∼0.5–1 Mpc−3 dex−1), and correspondingly in the star formation rate density (SFRD). The possible causes ...