Search Publications
Confirming a population of hot-dust dominated, star-forming, ultraluminous galaxies at high redshift
Muxlow, T. W. B.; Ivison, R. J.; Smail, Ian +6 more
We identify eight z > 1 radio sources undetected at 850 µm but robustly detected at 70 µm, confirming that they represent ultraluminous infrared galaxies (ULIRGs) with hotter dust temperatures (<Td> = 52 +/- 10K) than submillimetre galaxies (SMGs) at similar luminosities and redshifts. These galaxies share many prop…
STAGES: the Space Telescope A901/2 Galaxy Evolution Survey
Papovich, Casey; Bell, Eric F.; Johnson, Benjamin D. +26 more
We present an overview of the Space Telescope A901/2 Galaxy Evolution Survey (STAGES). STAGES is a multiwavelength project designed to probe physical drivers of galaxy evolution across a wide range of environments and luminosity. A complex multicluster system at z ~ 0.165 has been the subject of an 80-orbit F606W Hubble Space Telescope (HST)/Advan…
A VLT VIMOS study of the anomalous BCD Mrk996: mapping the ionized gas kinematics and abundances
Tsamis, Y. G.; Walsh, J. R.; Barlow, M. J. +4 more
A study of the blue compact dwarf (BCD) galaxy Mrk996 based on high-resolution optical Very Large Telescope Visible Multi-Object Spectrograph integral field unit spectroscopy is presented. Mrk996 displays multicomponent line emission, with most line profiles consisting of a narrow, central Gaussian [full width at half-maximum (FWHM) ~ 110kms-…
The INTEGRAL complete sample of type 1 AGN
de Rosa, A.; Bird, A. J.; Landi, R. +6 more
In this paper we discuss the broad-band X-ray characteristics of a complete sample of 36 type 1 active galactic nuclei (AGN), detected by INTEGRAL in the 20-40keV band above the 5.5σ level. We present, for all the objects in the sample, the broad-band (1-110keV) spectral analysis obtained by using INTEGRAL/Swift/Burst Alert Telescope observations …
The HST/ACS Coma Cluster Survey - V. Compact stellar systems in the Coma Cluster
Ferguson, H. C.; Huxor, A.; Smith, R. J. +14 more
The Hubble Space Telescope/Advanced Camera for Surveys (HST/ACS) Coma Cluster Treasury Survey is a deep two-passband imaging survey of the nearest very rich cluster of galaxies, covering a range of galaxy density environments. The imaging is complemented by a recent wide field redshift survey of the cluster conducted with Hectospec on the 6.5-m Mo…
Mid-infrared spectroscopy of infrared-luminous galaxies at z ~ 0.5-3
Pérez-Fournon, I.; Pozzi, F.; Valtchanov, I. +19 more
We present results on low-resolution mid-infrared (MIR) spectra of 70 IR-luminous galaxies obtained with the infrared spectrograph (IRS) onboard Spitzer. We selected sources from the European Large Area Infrared Survey with S15 > 0.8 mJy and photometric or spectroscopic z > 1. About half of the samples are quasi-stellar objects (Q…
Discovery of a magnetic field in the O9 sub-giant star HD 57682 by the MiMeS Collaboration
Bouret, J. -C.; Wade, G. A.; Neiner, C. +10 more
We report the detection of a strong, organized magnetic field in the O9IV star HD 57682, using spectropolarimetric observations obtained with ESPaDOnS at the 3.6-m Canada-France-Hawaii Telescope within the context of the Magnetism in Massive Stars (MiMeS) Large Programme. From the fitting of our spectra using non-local thermodynamic equilibrium mo…
A binary merger model for the formation of the Supernova 1987A triple-ring nebula
Podsiadlowski, Ph.; Morris, T.
We examine a binary merger model for the formation of the mysterious triple-ring nebula surrounding Supernova 1987A, which still has not been convincingly explained in detailed hydrodynamical calculations. During the merger of 15 and 5Msolar binary systems, mass is ejected primarily at mid-latitudes for a sufficiently evolved primary, a…
An intermediate black hole spin in the NLS1 galaxy SWIFT J2127.4+5654: chaotic accretion or spin energy extraction?
de Rosa, A.; Vaughan, S.; Fabian, A. C. +5 more
We have observed the hard X-ray selected Narrow-Line Seyfert 1 galaxy SWIFT J2127.4+5654 with Suzaku. We report the detection of a broad relativistic iron emission line from the inner accretion disc. Partial covering by either neutral or partially ionized gas cannot reproduce the spectral shape and, even if its presence is assumed, it does not sig…
The Chandra Deep Protocluster Survey: point-source catalogues for a 400-ks observation of the z = 3.09 protocluster in SSA22
Lehmer, B. D.; Smail, Ian; Alexander, D. M. +7 more
We present X-ray point-source catalogues for a deep ~400-ks Chandra ACIS-I (Advanced CCD Imaging Spectrometer) exposure of the SSA22 field. The observations are centred on a z = 3.09 protocluster, which is populated by Lyman break galaxies (LBGs), Lyα emitters (LAEs) and extended Lyα-emitting blobs (LABs). The survey reaches ultimate (3 count) sen…