46 citations · 176 across the 14 of their papers we have counts for
11 papers · 1 filter
The 2025 Release of Cloudy
Chamani M. Gunasekera, Peter A. M. van Hoof, Maryam Dehghanian +6
We present the 2025 release of the spectral synthesis code Cloudy, highlighting significant enhancements to the scope and accuracy of the physics which have been made since the pre…
H-, He-like recombination spectra -- V: On the dependence of the simulated line intensities on the number of electronic levels of the atoms
F. Guzmán, M. Chatzikos, G. Ferland
This paper presents a study of the dependence of the simulated intensities of recombination lines from hydrogen and helium atoms on the number of -resolved principal quantum…
The 23.01 release of Cloudy
Chamani M. Gunasekera, Peter A. M. van Hoof, Marios Chatzikos +1
We announce the C23.01 update of Cloudy. This corrects a simple coding error, present since 1990, in one routine that required a conversion from the line-center to the mean…
The 2023 release of Cloudy
Marios Chatzikos, Stefano Bianchi, Francesco Camilloni +8
We describe the 2023 release of the spectral synthesis code Cloudy. Since the previous major release, migrations of our online services motivated us to adopt git as our version con…
Revisiting the gas-phase chemical rate coefficients at high temperatures in CLOUDY
Gargi Shaw, Gary Ferland, M. Chatzikos
A two-body gas-phase reaction rate coefficient can be given by the usual Arrhenius-type formula which depends on temperature. The UMIST Database for Astrochemistry is a widely used…
High-ionization emission line ratios from quasar broad line regions: metallicity or density?
Matthew J. Temple, Gary J. Ferland, Amy L. Rankine +2
The flux ratios of high-ionization lines are commonly assumed to indicate the metallicity of the broad emission line region in luminous quasars. When accounting for the variation i…