Search Publications
ATLASGAL - properties of a complete sample of Galactic clumps
König, C.; Menten, K. M.; Smith, M. D. +15 more
The APEX Telescope Large Area Survey of the Galaxy (ATLASGAL) is an unbiased 870 µm submillimetre survey of the inner Galactic plane (|ℓ| < 60° with |b| < 1.5°). It is the largest and most sensitive ground-based submillimetre wavelength Galactic survey to date and has provided a large and systematic inventory of all massive, dense clum…
LOFAR/H-ATLAS: the low-frequency radio luminosity-star formation rate relation
Prandoni, I.; Tasse, C.; Hardcastle, M. J. +11 more
Radio emission is a key indicator of star formation activity in galaxies, but the radio luminosity-star formation relation has to date been studied almost exclusively at frequencies of 1.4 GHz or above. At lower radio frequencies, the effects of thermal radio emission are greatly reduced, and so we would expect the radio emission observed to be co…
Analysis of the Herschel DEBRIS Sun-like star sample
Duchêne, G.; Lestrade, J. -F.; Wyatt, M. C. +4 more
This paper presents a study of circumstellar debris around Sun-like stars using data from the Herschel DEBRIS Key Programme. DEBRIS is an unbiased survey comprising the nearest ∼90 stars of each spectral type A-M. Analysis of the 275 F-K stars shows that excess emission from a debris disc was detected around 47 stars, giving a detection rate of 17…
Testing the Larson relations in massive clumps
Peretto, N.; Elia, D.; Schisano, E. +6 more
We tested the validity of the three Larson relations in a sample of 213 massive clumps selected from the Herschel infrared Galactic Plane (Hi-GAL) survey, also using data from the Millimetre Astronomy Legacy Team 90 GHz (MALT90) survey of 3-mm emission lines. The clumps are divided into five evolutionary stages so that we can also discuss the Lars…
LLAMA: normal star formation efficiencies of molecular gas in the centres of luminous Seyfert galaxies
Lutz, D.; Genzel, R.; Sturm, E. +23 more
Using new Atacama Pathfinder Experiment and James Clerk Maxwell Telescope spectroscopy of the CO 2→1 line, we undertake a controlled study of cold molecular gas in moderately luminous (Lbol = 1043-44.5 erg s-1) active galactic nuclei (AGN) and inactive galaxies from the Luminous Local AGN with Matched Analogs (LLAM…
An application of an optimal statistic for characterizing relative orientations
Martin, P. G.; Poidevin, F.; Hill, Ryley +5 more
We present the projected Rayleigh statistic (PRS), a modification of the classic Rayleigh statistic, as a test for non-uniform relative orientation between two pseudo-vector fields. In the application here, this gives an effective way of investigating whether polarization pseudo-vectors (spin-2 quantities) are preferentially parallel or perpendicu…
Identifying the subtle signatures of feedback from distant AGN using ALMA observations and the EAGLE hydrodynamical simulations
Alexander, D. M.; Santini, P.; Swinbank, A. M. +10 more
We present sensitive 870 µm continuum measurements from our ALMA programmes of 114 X-ray selected active galactic nuclei (AGN) in the Chandra Deep Field-South and Cosmic Evolution Survey fields. We use these observations in combination with data from Spitzer and Herschel to construct a sample of 86 X-ray selected AGN, 63 with ALMA constraint…
A dust twin of Cas A: cool dust and 21 µm silicate dust feature in the supernova remnant G54.1+0.3
Rho, J.; Smith, M. W. L.; Gomez, H. L. +6 more
We present infrared (IR) and submillimetre observations of the Crab-like supernova remnant (SNR) G54.1+0.3 including 350µm (SHARC-II), 870µm (LABOCA), 70, 100, 160, 250, 350, and 500 µm (Herschel), and 3-40 µm (Spitzer). We detect dust features at 9, 11, and 21 µm and a long-wavelength continuum dust component. The 21…
LOFAR-Boötes: properties of high- and low-excitation radio galaxies at 0.5 < z < 2.0
Prandoni, I.; White, G. J.; Tasse, C. +13 more
This paper presents a study of the redshift evolution of radio-loud active galactic nuclei (AGN) as a function of the properties of their galaxy hosts in the Boötes field. To achieve this we match low-frequency radio sources from deep 150-MHz LOFAR (LOw Frequency ARray) observations to an I-band-selected catalogue of galaxies, for which we have de…
Gravitational lensing reveals extreme dust-obscured star formation in quasar host galaxies
Ivison, R. J.; McKean, J. P.; Isaak, K. G. +8 more
We have observed 104 gravitationally lensed quasars at z ∼ 1-4 with Herschel/SPIRE, the largest such sample ever studied. By targeting gravitational lenses, we probe intrinsic far-infrared (FIR) luminosities and star formation rates (SFRs) more typical of the population than the extremely luminous sources that are otherwise accessible. We detect 7…