367 citations · 6.8k across the 174 of their papers we have counts for
12 papers · 2 filters
Fast neutral outflows in powerful radio galaxies: a major source of feedback in massive galaxies
R. Morganti, C. N. Tadhunter, T. A. Oosterloo
We report the detection of fast (~ 1000 km/s), massive outflows of neutral gas observed -- using the WSRT -- as 21-cm HI absorption against the strong radio continuum of seven radi…
Gas and dust properties in the afterglow spectra of GRB 050730
R. L. C. Starling, P. M. Vreeswijk, S. L. Ellison +9
We present early WHT ISIS optical spectroscopy of the afterglow of gamma-ray burst GRB 050730. The spectrum shows a DLA system with the highest measured hydrogen column to date: N(…
Outflows and shocks in compact radio sources
J. Holt, C. N. Tadhunter, R. Morganti
We report some key results from the optical emission line study of a complete sample of compact radio sources. We find strong evidence for jet-driven outflows in the circum-nuclear…
Merger-origin of radio galaxies investigated with H I observations
B. H. C. Emonts, R. Morganti, T. A. Oosterloo +4
We present results of an HI study of a complete sample of nearby radio galaxies. Our goal is to investigate whether merger or interaction events could be at the origin of the radio…
Resolving the Shocks in Radio Galaxy Nebulae: HST and Radio Imaging of 3C 171, 3C277.3 and PKS2250-41
Avanti Tilak, Christopher P. O'Dea, Clive Tadhunter +5
We present the results of HST/WFPC2 medium and narrow band imaging and VLA and MERLIN2 radio imaging of three powerful radio galaxies: 3C 171, 3C 277.3, and PKS 2250-41. We obtaine…
A jet-induced outflow of warm gas in 3C 293
B. H. C. Emonts, R. Morganti, C. N. Tadhunter +3
Using long slit emission-line spectra we detect a fast outflow of ionized gas, with velocities up to 1000 km/s, in the nearby powerful radio galaxy 3C 293 (z = 0.045). The fast out…
Fast outflow of neutral and ionized gas from the radio galaxy 3C 293
B. H. C. Emonts, R. Morganti, T. A. Oosterloo +2
We detect a fast outflow of neutral and ionized gas with velocities up to about 1000 km/s from the central region of radio galaxy 3C 293. With optical spectroscopy we locate the bu…
The location of the broad HI absorption in 3C305: clear evidence for a jet-accelerated neutral outflow
R. Morganti, T. A. Oosterloo, C. N. Tadhunter +2
We present high-spatial resolution 21-cm HI VLA observations of the radio galaxy 3C305 (z=0.041). These new high-resolution data show that the ~1000 km/s broad HI absorption, earli…
From young massive star cluster to old globular: the L_V-sigma_0 relationship as a diagnostic tool
R. de Grijs, M. I. Wilkinson, C. N. Tadhunter
We present a new analysis of the properties of the young massive star clusters, which demonstrates that these objects are plausible progenitors of old globular clusters (GCs). The…
HST/STIS low dispersion spectroscopy of three Compact Steep Spectrum sources Evidence for jet-cloud interaction
A. Labiano, C. P. O'Dea, R. Gelderman +9
We present Hubble Space Telescope Imaging Spectrograph long-slit spectroscopy of the emission line nebulae in the compact steep spectrum radio sources 3C 67, 3C 277.1, and 3C 303.1…
The giant star forming halo associated with the radio galaxy PKS1932-46
Montse Villar-Martin, Clive Tadhunter, Raffaella Morganti +1
We report the discovery of a giant (~160 kpc) knotty extended emission line nebula associated with the radio galaxy PKS1932-46 at z=0.23. The 2-d long slit spectra, obtained with V…
Polarimetry of powerful radio galaxies from z=0 to z=4
Clive Tadhunter
The advent of sensitive polarimeters on large telescopes has led to a revolution in our understanding of active galaxies over the last 20 years. In the case of powerful radio galax…