Search Publications
The star formation rate density from z = 1 to 6
Clements, David L.; Oliver, Seb; Vaccari, Mattia +6 more
We use 3035 Herschel-SPIRE 500 µm sources from 20.3 deg2 of sky in the HerMES Lockman, ES1 and XMM-LSS areas to estimate the star formation rate density at z = 0-6. 500 µm sources are associated first with 350 and 250 µm sources, and then with Spitzer 24 µm sources from the SWIRE photometric redshift catalogue. T…
Far-infrared and dust properties of present-day galaxies in the EAGLE simulations
Baes, Maarten; Schaye, Joop; Theuns, Tom +3 more
The Evolution and Assembly of GaLaxies and their Environments (EAGLE) cosmological simulations reproduce the observed galaxy stellar mass function and many galaxy properties. In this work, we study the dust-related properties of present-day EAGLE galaxies through mock observations in the far-infrared and submm wavelength ranges obtained with the 3…
NuSTAR catches the unveiling nucleus of NGC 1068
Harrison, F. A.; Stern, D.; Alexander, D. M. +15 more
We present a NuSTAR and XMM-Newton monitoring campaign in 2014/2015 of the Compton-thick Seyfert 2 galaxy, NGC 1068. During the 2014 August observation, we detect with NuSTAR a flux excess above 20 keV (32 ± 6 per cent) with respect to the 2012 December observation and to a later observation performed in 2015 February. We do not detect any spectra…
Interstellar extinction curve variations towards the inner Milky Way: a challenge to observational cosmology
Valenti, Elena; Wolf, Christian; Udalski, Andrzej +18 more
We investigate interstellar extinction curve variations towards ∼4 deg2 of the inner Milky Way in VIJKs photometry from the OGLE-III (third phase of the Optical Gravitational Lensing Experiment) and VVV (VISTA Variables in the Via Lactea) surveys, with supporting evidence from diffuse interstellar bands and F435W, F625W photo…
The GHOSTS survey - II. The diversity of halo colour and metallicity profiles of massive disc galaxies
Bell, Eric F.; Monachesi, Antonela; Radburn-Smith, David J. +5 more
We study the stellar halo colour properties of six nearby massive highly inclined disc galaxies using Hubble space telescope Advanced Camera for Surveys and Wide Field Camera 3 observations in both F606W and F814W filters from the GHOSTS (Galaxy Halos, Outer disks, Substructure, Thick disks, and Star clusters) survey. The observed fields probe the…
The galaxy UV luminosity function at z ≃ 2-4; new results on faint-end slope and the evolution of luminosity density
Mortlock, Alice; Dunlop, James S.; McLure, Ross J. +1 more
We present a new, robust measurement of the evolving rest-frame ultraviolet (UV) galaxy luminosity function (LF) over the key redshift range from z ≃ 2 to z ≃ 4. Our results are based on the high dynamic range provided by combining the Hubble Ultra Deep Field (HUDF), CANDELS/GOODS-South, and UltraVISTA/COSMOS surveys. We utilize the unparalleled m…
CHIMPS: the 13CO/C18O (J = 3 → 2) Heterodyne Inner Milky Way Plane Survey
White, G. J.; Moore, T. J. T.; Plume, R. +17 more
We present the 13CO/C18O (J = 3 → 2) Heterodyne Inner Milky Way Plane Survey (CHIMPS) which has been carried out using the Heterodyne Array Receiver Program on the 15 m James Clerk Maxwell Telescope (JCMT) in Hawaii. The high-resolution spectral survey currently covers |b| ≤ 0.5° and 28° ≲ l ≲ 46°, with an angular resolution …
Doppler imaging of the planetary debris disc at the white dwarf SDSS J122859.93+104032.9
Parsons, Steven G.; Breedt, Elmé; Gänsicke, Boris T. +6 more
Debris discs which orbit white dwarfs are signatures of remnant planetary systems. We present 12 yr of optical spectroscopy of the metal-polluted white dwarf SDSS J1228+1040, which shows a steady variation in the morphology of the 8600 Å Ca II triplet line profiles from the gaseous component of its debris disc. We identify additional emission line…
LoCuSS: Testing hydrostatic equilibrium in galaxy clusters
Finoguenov, A.; Smith, G. P.; Okabe, N. +17 more
We test the assumption of hydrostatic equilibrium in an X-ray luminosity selected sample of 50 galaxy clusters at 0.15 < z < 0.3 from the Local Cluster Substructure Survey (LoCuSS). Our weak-lensing measurements of M500 control systematic biases to sub-4 per cent, and our hydrostatic measurements of the same achieve excellent agre…
Fractal cometary dust - a window into the early Solar system
Bentley, M. S.; Mannel, T.; Schmied, R. +4 more
The properties of dust in the protoplanetary disc are key to understanding the formation of planets in our Solar system. Many models of dust growth predict the development of fractal structures which evolve into non-fractal, porous dust pebbles representing the main component for planetesimal accretion. In order to understand comets and their orig…