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Radio jets in NGC 4151 where eMERLIN meets HST
(2017-12-21)
We present high-sensitivity eMERLIN radio images of the Seyfert galaxy NGC 4151 at 1.5 GHz. We compare the new eMERLIN images to those from archival MERLIN observations in 1993 to determine the change in jet morphology in ...
The Herschel-ATLAS Data Release 2, Paper I. Submillimeter and Far-infrared Images of the South and North Galactic Poles : The Largest Herschel Survey of the Extragalactic Sky
(2017-12-21)
We present the largest submillimeter images that have been made of the extragalactic sky. The Herschel Astrophysical Terahertz Large Area Survey (H-ATLAS) is a survey of 660 deg$^2$ with the PACS and SPIRE cameras in five ...
The distribution of local star formation activity as a function of galaxy stellar mass, environment and morphology
(2017-12-21)
We present a detailed inventory of star formation in the local Universe, dissecting the cosmic star formation budget as a function of key variables that influence the star formation rate (SFR) of galaxies: stellar mass, ...
Constraining cosmic scatter in the Galactic halo through a differential analysis of metal-poor stars
(2017-12)
Context. The chemical abundances of metal-poor halo stars are important to understanding key aspects of Galactic formation and evolution. Aims. We aim to constrain Galactic chemical evolution with precise chemical abundances ...
Constraining cosmic scatter in the Galactic halo through a differential analysis of metal-poor stars
(2017-12)
Context. The chemical abundances of metal-poor halo stars are important to understanding key aspects of Galactic formation and evolution. Aims. We aim to constrain Galactic chemical evolution with precise chemical abundances ...
Density profile of dark matter haloes and galaxies in the Horizon-AGN simulation : the impact of AGN feedback
(2017-12-01)
Using a suite of three large cosmological hydrodynamical simulations, Horizon-AGN, Horizon-noAGN (no AGN feedback) and Horizon-DM (no baryons), we investigate how a typical sub-grid model for AGN feedback affects the ...
Cosmic evolution of stellar quenching by AGN feedback : clues from the Horizon-AGN simulation
(2017-11-21)
The observed massive end of the galaxy stellar mass function is steeper than its predicted dark matter halo counterpart in the standard $\Lambda $CDM paradigm. In this paper, we investigate the impact of active galactic ...
The Metallicity and Elemental Abundance Gradients of Simulated Galaxies, and their Environmental Dependence
(2017-11-11)
The internal distribution of heavy elements, in particular the radial metallicity gradient, offers insight into the merging history of galaxies. Using our cosmological, chemodynamical simulations that include both detailed ...
The evolving far-IR galaxy luminosity function and dust-obscured star-formation rate density out to z~5
(2017-11-11)
We present a new measurement of the evolving galaxy far-IR luminosity function (LF) extending out to redshifts z~5, with resulting implications for the level of dust-obscured star-formation density in the young Universe. ...
Extinction ratios in the inner Galaxy as revealed by the VVV survey
(2017-11-01)
Interstellar extinction towards the Galactic Center is large and significantly differential. Its reddening and dimming effects in red clump stars in the Galactic Bulge can be exploited to better constrain the extinction ...