The radiation from stars and active galactic nuclei (AGNs) creates photodissociation regions
(PDRs) and X-ray-dominated regions (XDRs), where the chemistry or heating is dominated …

We describe the 2017 release of the spectral synthesis code CLOUDY, summarizing the
many improvements to the scope and accuracy of the physics which have been made since …

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 …

Context. The far-infrared (FIR) lines are important tracers of the cooling and physical
conditions of the interstellar medium (ISM) and are rapidly becoming workhorse diagnostics …

We use the spectral synthesis code cloudy to tabulate the properties of gas for an extensive
range in redshift (z= 0–9), temperature (log T [K]= 1–9.5), metallicity (log Z/Z⊙=− 4–+ 0.5, Z …

The sensitive infrared telescopes, Spitzer and Herschel, have been used to target low-
metallicity star-forming galaxies, allowing us to investigate the properties of their interstellar …

We present a multiline survey of the interstellar medium (ISM) in two z> 6 quasar host
galaxies, PJ231− 20 (z= 6.59) and PJ308− 21 (z= 6.23), and their two companion galaxies …

We present a methodology for modeling the joint ionizing impact due to a" simple X-ray
population"(SXP) and its corresponding simple stellar population (SSP), where" simple" …

Observations of local star-forming galaxies (SFGs) show a tight correlation between their
singly ionized carbon line luminosity () and star formation rate (SFR), suggesting that may be …

We use our new optical-imaging and spectrophotometric survey of key diagnostic emission
lines in 30 Doradus, together with CLOUDY photoionization models, to study the physical …