The MAPPINGS III Library of Fast Radiative Shock Models (2008)
Allen, Mark G., Groves, Brent A., Dopita, Michael A., Sutherland, Ralph S., Kewley, Lisa J.
We present a new library of fully-radiative shock models calculated with the MAPPINGS III shock and photoionization code. The library consists of grids of models with shock velocities in the range...
John Bally, David Theil, Ralph S. Sutherland
. We review the characteristics of the Orion/Eridanus bubble, its relationship to the Orion OB association, and the molecular clouds in the region. We discuss the relationship of the Orion region to...
The stellar content of the WR galaxy NGC5253 from ISO/SWS spectroscopy (2007)
Paul A. Crowther, Sara C. Beck, Allan J. Willis, Peter S. Conti, Patrick W. Morris, Ralph S. Sutherland
1. Why mid-IR spectroscopy of WR galaxies? Wolf-Rayet (WR) galaxies are a subset of blue emission-line galaxies whose spectra show the signature of large numbers of WR stars with ages in the range
Three-Dimensional Simulations of a Starburst-Driven Galactic Wind (2007)
Cooper, Jackie L., Bicknell, Geoffrey V., Sutherland, Ralph S., Bland-Hawthorn, Joss
We have performed a series of three-dimensional simulations of a starburst-driven wind in an inhomogeneous interstellar medium. The introduction of an inhomogeneous disk leads to differences in the...
Dopita, Michael A., Fischera, Joerg, Sutherland, Ralph S., Kewley, Lisa J., Leitherer, Claus, Tuffs, Richard J., ...
We build, as far as theory will permit, self consistent model HII regions around central clusters of aging stars. These produce strong emission line diagnostics applicable to either individual HII...
Dopita, Michael A., Fischera, Joerg, Sutherland, Ralph S., Kewley, Lisa J., Tuffs, Richard J., Popescu, Cristina C., ...
We examine, from a theoretical viewpoint, how the physical parameters of HII regions are controlled in both normal galaxies and in starburst environments. These parameters are the HII region...
Compact HII regions: what lies within? (2006)
Dopita,Michael A., Fischera,Jörg, Crowley,Oliver, Sutherland,Ralph S., Christiansen,Jessie, Tuffs,Richard J., ...
This paper presents both stellar mass and H II region diagnostics based on dusty, radiation-pressure dominated photoionization models for compact and ultra-compact H II regions, and compares these...
Compact HII regions: what lies within? (2006)
Dopita, Michael A., Fischera, Jörg, Crowley, Oliver, Sutherland, Ralph S., Christiansen, Jessie, Tuffs, Richard J., ...
This paper presents both stellar mass and H II region diagnostics based on dusty, radiation-pressure dominated photoionization models for compact and ultra-compact H II regions, and compares these...
Compact HII regions: What lies within? (2006)
Dopita, Michael A., Fischera, Jörg, Crowley, Oliver, Sutherland, Ralph S., Christiansen, Jessie, Tuffs, Richard J., ...
Dopita, Michael A., Fischera, Jörg, Sutherland, Ralph S., Kewley, Lisa J., Tuffs, Richard J., Popescu, Cristina C., ...
Interactions of Jets with Inhomogeneous Cloudy Media (2005)
Saxton, Curtis J., Bicknell, Geoffrey V., Sutherland, Ralph S., Midgley, Stuart
We present two-dimensional slab-jet simulations of jets in inhomogeneous media consisting of a tenuous hot medium populated with a small filling factor by warm, dense clouds. The simulations are...
3D ISM-Shock Spectral Emission: X-ray models for Radio Galaxy SED Modeling (2005)
Galaxies form out of small fluctuations in a smoothly expanding Universe. However, the initial gravitational collapse phase is accompanied by the formation of supermassive black holes and clusters of...
Groves, Brent A., Dopita, Michael A., Sutherland, Ralph S.
We present the implementation of dusty, radiation pressure dominated photoionization models applicable to the Narrow Line Regions (NLRs) of Active Galactic Nuclei, using the \mapiii code. We give a...
Groves, Brent A., Dopita, Michael A., Sutherland, Ralph S.
Seyfert narrow line region (NLR) emission line ratios are remarkably uniform, displaying only ~0.5 dex variation between galaxies, and even less within an individual object. Previous photoionization...
Starburst Galaxies: Why the Calzetti Dust Extinction Law? (2003)
Fischera, Joerg, Dopita, Michael A., Sutherland, Ralph S.
The empirical reddening function for starburst galaxies generated by Calzetti and her co-workers has proven very successful, and is now used widely in the observational literature. Despite its...
Production of ring-like structure in the cocoon of Hercules A (2002)
Saxton, Curtis J., Bicknell, Geoffrey V., Sutherland, Ralph S.
The radio lobes of the radio galaxy Hercules A contain intriguing ring-like structures concentric with the jet axis. To investigate the occurrence of such features, we have used hydrodynamic...
Complex shock structure in the western hot-spot of Pictor A (2002)
Saxton, Curtis J., Sutherland, Ralph S., Bicknell, Geoffrey V., Blanchet, Gwendoline, Wagner, Stefan J., Metchnik, Marc V.
We have carried out simulations of supersonic light jets in order to model the features observed in optical and radio images of the western hot-spot in the radio galaxy Pictor A. We have considered...
Sutherland, Ralph S., Bisset, David K., Bicknell, Geoffrey V.
We address a numerical instability that arises in the directionally split computation of hydrodynamic flows when shock fronts are parallel to a grid plane. Transverse oscillations in pressure,...
Production of ring-like structure in the cocoon of Hercules A (2002)
Saxton, Curtis J., Bicknell, Geoffrey V., Sutherland, Ralph S.
The radio lobes of the radio galaxy Hercules A contain intriguing ring-like structures concentric with the jet axis. To investigate the occurrence of such features, we have used hydrodynamic...
Sutherland, Ralph S., Bisset, David K., Bicknell, Geoffrey V.
We address a numerical instability that arises in the directionally split computation of hydrodynamic flows when shock fronts are parallel to a grid plane. Transverse oscillations in pressure,...
Production of ring-like structure in the cocoon of Hercules A (2002)
Saxton, Curtis J., Bicknell, Geoffrey V., Sutherland, Ralph S.
The radio lobes of the radio galaxy Hercules A contain intriguing ring-like structures concentric with the jet axis. To investigate the occurrence of such features, we have used hydrodynamic...
Sutherland, Ralph S., Bisset, David K., Bicknell, Geoffrey V.
We address a numerical instability that arises in the directionally split computation of hydrodynamic flows when shock fronts are parallel to a grid plane. Transverse oscillations in pressure,...
Production of ring-like structure in the cocoon of Hercules A (2002)
Saxton, Curtis J., Bicknell, Geoffrey V., Sutherland, Ralph S.
The radio lobes of the radio galaxy Hercules A contain intriguing ring-like structures concentric with the jet axis. To investigate the occurrence of such features, we have used hydrodynamic...
Sutherland, Ralph S., Bisset, David K., Bicknell, Geoffrey V.
We address a numerical instability that arises in the directionally split computation of hydrodynamic flows when shock fronts are parallel to a grid plane. Transverse oscillations in pressure,...
Production of ring-like structure in the cocoon of Hercules A (2002)
Saxton, Curtis J., Bicknell, Geoffrey V., Sutherland, Ralph S.
The radio lobes of the radio galaxy Hercules A contain intriguing ring-like structures concentric with the jet axis. To investigate the occurrence of such features, we have used hydrodynamic...
Sutherland, Ralph S., Bisset, David K., Bicknell, Geoffrey V.
We address a numerical instability that arises in the directionally split computation of hydrodynamic flows when shock fronts are parallel to a grid plane. Transverse oscillations in pressure,...
Production of ring-like structure in the cocoon of Hercules A (2002)
Saxton, Curtis J., Bicknell, Geoffrey V., Sutherland, Ralph S.
The radio lobes of the radio galaxy Hercules A contain intriguing ring-like structures concentric with the jet axis. To investigate the occurrence of such features, we have used hydrodynamic...
The Centaurus A Northern Middle Lobe as a Buoyant Bubble (2001)
Saxton, Curtis J., Sutherland, Ralph S., Bicknell, Geoffrey V.
We model the northern middle radio lobe of Centaurus A (NGC 5128) as a buoyant bubble of plasma deposited by an intermittently active jet. The extent of the rise of the bubble and its morphology...
Bicknell, Geoffrey V., Sutherland, Ralph S., Dopita, Michael A., Dey, Arjun, Miley, George K.
The high redshift radio galaxy 4C41.17 consists of a powerful radio source in which previous work has shown that there is strong evidence for jet-induced star formation along the radio axis. We argue...
Properties of Hot Stars in the Wolf-Rayet galaxy NGC5253 from ISO Spectroscopy (1998)
Crowther, Paul A., Beck, S. C., Willis, Allan J., Conti, Peter S., Morris, Pat W., Sutherland, Ralph S.
ISO-SWS spectroscopy of the WR galaxy NGC5253 is presented, and analysed to provide estimates of its hot young star population. Our approach differs from previous investigations in that we are able...
Physical Conditions in the Seyfert Galaxy NGC 2992 (1998)
Allen, Mark G., Dopita, Michael A., Tsvetanov, Zlatan I., Sutherland, Ralph S.
This paper presents long slit spectral maps of the bi-cone shaped extended narrow line region (ENLR) in the Seyfert galaxy NGC 2992. We investigate the physical properties of the ENLR via emission...