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The jet-cloud interacting radio galaxy PKS B2152-699 - I. Structures revealed in new deep radio and X-ray observations
Young, A. J.; Birkinshaw, M.; Worrall, D. M. +5 more
PKS B2152-699, which has radio power characteristic of sources that dominate radio feedback, is exceptional in showing a wide range of features associated with radio-galaxy/gas interactions. We present new deep radio (Australia Telescope Compact Array), X-ray (Chandra) and ground-based optical observations, and test the energetics of the feedback …
The evolutionary connection between QSOs and SMGs: molecular gas in far-infrared luminous QSOs at z ∼ 2.5
Ivison, R. J.; Clements, D. L.; de Zotti, G. +23 more
We present Institut de Radioastronomie Millimétrique Plateau de Bure Interferometer observations of the 12CO (3-2) emission from two far-infrared luminous QSOs at z ∼ 2.5 selected from the Herschel-Astrophysical Tetrahertz Large Area Survey. These far-infrared bright QSOs were selected to have supermassive black holes (SMBHs) with masse…
A 7 mm line survey of the shocked and disrupted molecular gas towards the W28 field TeV gamma-ray sources
Rowell, G.; Fukui, Y.; Burton, M. G. +4 more
We present 7 mm Mopra observations of the dense molecular gas towards the W28 supernova remnant (SNR) field, following a previous 12 mm line survey of this region. These observations take advantage of the 7 mm beam size to probe the dense and disrupted gas in the region at ∼1 arcmin scales. Our observations are focused towards the north-eastern (N…
Probing the nuclear and circumnuclear activity of NGC 1365 in the infrared
Esquej, P.; Hatziminaoglou, E.; Acosta-Pulido, J. A. +12 more
We present new far-infrared (70-500 µm) Herschel Photodetector Array Camera and Spectrometer (PACS) and Spectral and Photometric Imaging Receiver (SPIRE) imaging observations as well as new mid-IR Gemini/Thermal-Region Camera Spectrograph imaging (8.7 and 18.3 µm) and spectroscopy of the inner Lindblad resonance (ILR) region (R < 2.…
FMOS near-IR spectroscopy of Herschel-selected galaxies: star formation rates, metallicity and dust attenuation at z ∼ 1
Clements, D. L.; Dunlop, J. S.; Buat, V. +36 more
We investigate the properties (e.g. star formation rate, dust attenuation, stellar mass and metallicity) of a sample of infrared (IR) luminous galaxies at z ∼ 1 via near-IR spectroscopy with Subaru-FMOS. Our sample consists of Herschel SPIRE and Spitzer MIPS selected sources in the COSMOS field with photometric redshifts in the range of 0.7 < z…
SHARP - I. A high-resolution multiband view of the infrared Einstein ring of JVAS B1938+666
Vegetti, S.; McKean, J. P.; Auger, M. W. +3 more
We present new mass models for the gravitational lens system B1938+666, using multiwavelength data acquired from Keck adaptive optics (AO) and Hubble Space Telescope (HST) observations. These models are the first results from the Strong lensing at High Angular Resolution Program (SHARP), a project designed to study known quadruple image and Einste…
Spatially resolved colours and stellar population properties in early-type galaxies at z ∼ 1.5
Longhetti, M.; Gargiulo, A.; Saracco, P. +2 more
We present F850LP - F160W colour gradients for 11 early-type galaxies (ETGs) at 1.0 < zspec < 1.9 selected from the GOODS-South field. Significant negative F850LP - F160W colour gradients (core redder than the outskirts) have been detected in ∼70 per cent of our sample within the effective radius Re, the remaining 30 pe…
Deep Chandra and XMM-Newton X-ray observations of AWM 7 - I. Investigating X-ray surface brightness fluctuations
Fabian, A. C.; Sanders, J. S.
We investigate the levels of small-scale structure in surface brightness images of the core of the X-ray bright cool-core galaxy cluster AWM 7. After subtraction of a model of the smooth cluster emission, we find a number of approximately radial surface brightness depressions which are not present in simulated images and are seen in both the Chand…
H I content, metallicities and spin temperatures of damped and sub-damped Lyα systems in the redshift desert (0.6 < zabs < 1.7)★
Ellison, Sara L.; Prochaska, J. Xavier; Kanekar, Nissim +2 more
The H I 21-cm absorption optical depth and the N(H I) column density derived from Lyα absorption can be combined to yield the spin temperature (Ts) of intervening damped Lyα systems (DLAs). Although spin temperatures have been determined for samples of DLAs with zabs < 0.6 and zabs > 1.7, the intermediate reg…
The XMM-Newton view of supergiant fast X-ray transients: the case of IGR J16418-4532
Mereghetti, S.; Sidoli, L.; Sguera, V. +1 more
We report on a 40 ks long, uninterrupted X-ray observation of the candidate supergiant fast X-ray transient (SFXT) IGR J16418-4532 performed with XMM-Newton on 2011 February 23. This high-mass X-ray binary lies in the direction of the Norma arm, at an estimated distance of 13 kpc. During the observation, the source showed strong variability exceed…