Search Publications
LENSED: a code for the forward reconstruction of lenses and sources from strong lensing observations
Metcalf, R. Benton; Tessore, Nicolas; Bellagamba, Fabio
Robust modelling of strong lensing systems is fundamental to exploit the information they contain about the distribution of matter in galaxies and clusters. In this work, we present LENSED, a new code which performs forward parametric modelling of strong lenses. LENSED takes advantage of a massively parallel ray-tracing kernel to perform the neces…
Herschel far-infrared photometry of the Swift Burst Alert Telescope active galactic nuclei sample of the local universe - II. SPIRE observations
Mushotzky, Richard F.; Cowie, Lennox L.; Barger, Amy J. +3 more
We present far-infrared (FIR) and submillimetre photometry from the Herschel Space Observatory's Spectral and Photometric Imaging Receiver (SPIRE) for 313 nearby (z < 0.05) active galactic nuclei (AGN). We selected AGN from the 58 month Swift Burst Alert Telescope (BAT) catalogue, the result of an all-sky survey in the 14-195 keV energy band, a…
Local analyses of Planck maps with Minkowski functionals
Novaes, C. P.; Bernui, A.; Ferreira, I. S. +1 more
Minkowski functionals (MF) are excellent tools to investigate the statistical properties of the cosmic background radiation (CMB) maps. Between their notorious advantages is the possibility to use them efficiently in patches of the CMB sphere, which allow studies in masked skies, inclusive analyses of small sky regions. Then, possible deviations f…
Feeding and feedback in NGC 3081
Robinson, Andrew; Schnorr-Müller, Allan; Storchi-Bergmann, Thaisa +2 more
We present two-dimensional gaseous kinematics of the inner 1.2 × 1.8 kpc2 of the Seyfert 2 galaxy NGC 3081, from optical spectra (5600-7000 Å) obtained with the Gemini Multi Object Spectrograph integral field spectrograph on the Gemini North telescope at a spatial resolution of ≈100 pc. We have identified two components in the line emit…
KROSS: mapping the Hα emission across the star formation sequence at z ≈ 1
Swinbank, A. M.; Magdis, Georgios E.; Bureau, Martin +7 more
We present first results from the KMOS (K-band Multi-Object Spectrograph) Redshift One Spectroscopic Survey, an ongoing large kinematical survey of a thousand, z ∼ 1 star-forming galaxies, with VLT KMOS. Out of the targeted galaxies (∼500 so far), we detect and spatially resolve Hα emission in ∼90 and 77 per cent of the sample, respectively. Based…
The mass fraction of AGN and the Fundamental Plane of black hole activity from a large X-ray-selected sample of LINERs
Best, P. N.; Nisbet, D. M.
A sample of 576 X-ray-selected LINERs was constructed by combining data from the 3XMM-DR4 and SDSS-DR7 catalogues. The sample was used to investigate the fraction of galaxies hosting a LINER, finding that the fraction is a strong function of both stellar mass and black hole mass (increasing as {f_LINER ∝ M^{1.6 ± 0.2}_{*}} and {f_LINER ∝ M^{0.6 ± …
HST imaging of the dusty filaments and nucleus swirl in NGC4696 at the centre of the Centaurus Cluster
Fabian, A. C.; Reynolds, C. S.; Pinto, C. +14 more
Narrow-band HST imaging has resolved the detailed internal structure of the 10 kpc diameter H α+[N II] emission line nebulosity in NGC4696, the central galaxy in the nearby Centaurus cluster, showing that the dusty, molecular, filaments have a width of about 60 pc. Optical morphology and velocity measurements indicate that the filaments are dragge…
Decimetre-scaled spectrophotometric properties of the nucleus of comet 67P/Churyumov-Gerasimenko from OSIRIS observations
Jorda, L.; Lamy, P. L.; Bertaux, J. -L. +55 more
We present the results of the photometric and spectrophotometric properties of the 67P/Churyumov-Gerasimenko nucleus derived with the Optical, Spectroscopic and Infrared Remote Imaging System instrument during the closest fly-by over the comet, which took place on 2015 February 14 at a distance of ∼6 km from the surface. Several images covering th…
Properties of massive star-forming clumps with infall motions
Zhou, Jian-Jun; Wu, Gang; Esimbek, Jarken +7 more
In this work, we aim to characterize high-mass clumps with infall motions. We selected 327 clumps from the Millimetre Astronomy Legacy Team 90-GHz survey, and identified 100 infall candidates. Combined with the results of He et al., we obtained a sample of 732 high-mass clumps, including 231 massive infall candidates and 501 clumps where infall is…
Galaxy populations in the 26 most massive galaxy clusters in the South Pole Telescope SPT-SZ survey
Rest, A.; Zenteno, A.; Desai, S. +13 more
We present a study of the optical properties of the 26 most massive galaxy clusters within the South Pole Telescope Sunyaev-Zel'dovich (SPT-SZ) 2500 deg2 survey spanning the redshift range 0.10 < z < 1.13. We measure the radial profiles, the luminosity functions (LFs), and the halo occupation numbers (HONs) using optical data of t…