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Internal Dust Correction Factors for Star Formation Rates Derived for Dusty \HII Regions and Starburst Galaxies
M. A. Dopita, B. A. Groves, R. S. Sutherland +1
Star formation rates in galaxies are frequently estimated using the Balmer line fluxes. However, these can be systematically underestimated because dust competes for the absorption…
The Dynamical Evolution of Narrow Line Regions
M. A. Dopita, G. V. Bicknell, R. S. Sutherland +1
We review recent progress by the RSAA team in elucidating the dynamical evolution of the various classes of Narrow Line Regions (NLR) in active galaxies.
BRIGHT lights, BIG city: Massive galaxies, giant Ly-a nebulae, and proto--clusters
W. van Breugel, M. Reuland, W. de Vries +10
High redshift radio galaxies are great cosmological tools for pinpointing the most massive objects in the early Universe: massive forming galaxies, active super--massive black hole…
The Numerical Simulation of Radiative Shocks I: The elimination of numerical shock instabilities using a localized oscillation filter
R. S. Sutherland, D. K. Bisset, G. V. Bicknell
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…
Production of ring-like structure in the cocoon of Hercules A
Curtis J. Saxton, Geoffrey V. Bicknell, Ralph S. Sutherland
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 hy…
Complex shock structure in the western hot-spot of Pictor A
Curtis J. Saxton, Ralph S. Sutherland, Geoffrey V. Bicknell +3
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. W…
Are the Narrow Line Regions in Active Galaxies Dusty and Radiation Pressure Dominated?
M. A. Dopita, B. A. Groves, R. S. Sutherland +2
The remarkable similarity between emission spectra of narrow line regions (NLR) in Seyfert Galaxies has long presented a mystery. In photoionization models, this similarity implies…