446 citations · 1.2k across the 21 of their papers we have counts for
21 papers
H, He-like recombination spectra IV; H, He-like recombination spectra IV: clarification and refinement of methodology for -changing collisions
N. R. Badnell, F. Guzmán, S. Brodie +4
Precise spectral diagnostic modelling of H~{\sc i} and He~{\sc ii} recombination spectra can constrain theoretical models which describe many astrophysical environments. Simple ana…
The Herschel Planetary Nebula Survey (HerPlaNS) - a comprehensive dusty photoionization model of NGC6781
Masaaki Otsuka, Toshiya Ueta, Peter A. M. van Hoof +9
We perform a comprehensive analysis of the planetary nebula (PN) NGC6781 to investigate the physical conditions of each of its ionized, atomic, and molecular gas and dust component…
Testing atomic collision theory with the two-photon continuum of astrophysical nebulae
F. Guzmán, N. R. Badnell, M. Chatzikos +3
Accurate rates for energy-degenerate l-changing collisions are needed to determine cosmological abundances and recombination. There are now several competing theories for the treat…
Accurate determination of the free-free Gaunt factor. II - relativistic Gaunt factors
P. A. M. van Hoof, G. J. Ferland, R. J. R. Williams +4
When modelling an ionised plasma, all spectral synthesis codes need the thermally averaged free-free Gaunt factor defined over a very wide range of parameter space in order to prod…
Near-infrared photometry of Galactic planetary nebulae with the VVV Survey
W. A. Weidmann, R. Gamen, P. A. M. van Hoof +3
Planetary nebulae (PNe) are powerful tracers of evolved stellar populations. Among the 3000 known PNe in the Galaxy, about 600 are located within the 520 square-degree area covered…
The 2013 Release of Cloudy
G. J. Ferland, R. L. Porter, P. A. M. van Hoof +6
This is a summary of the 2013 release of the plasma simulation code Cloudy. Cloudy models the ionization, chemical, and thermal state of material that may be exposed to an external…