352 citations · 1.6k across the 43 of their papers we have counts for
45 papers
Exploring Case B I: The Footprints of Hidden Radiation Fields in H I Balmer Decrements
Maryam Dehghanian, Fransisco Guzman, Peter van Hoof +2
Theory predicts that H I emission from photoionized clouds should lie close to the Case B limit established by Menzel and Baker, and observations of nearby nebulae have largely con…
JWST observations of the Ring Nebula (NGC 6720) -- II. PAH emission
Nicholas Clark, Els Peeters, Nick L. J. Cox +16
Polycyclic aromatic hydrocarbons (PAHs) and carbonaceous dust have been observed in clumpy circumstellar environments, yet their formation and evolutionary pathways in such environ…
JWST observations of the Ring Nebula (NGC 6720): III. A dusty disk around its Central Star
Raghvendra Sahai, Griet Van de Steene, Peter van Hoof +16
The planetary nebula NGC 6720, also known as the ``Ring Nebula", is one of the most iconic examples of nearby planetary nebulae whose morphologies present a challenge to our theore…
Cloudy and the High-Resolution Microcalorimeter Revolution: Optical, UV, and X-ray Spectra of One-electron Systems
Chamani M. Gunasekera, Peter A. M. van Hoof, Marios Chatzikos +1
With the launch of the XRISM microcalorimeter mission, space-based X-ray observations will achieve a record spectral resolving power of 1200. With this resolving…
Non-thermal radio emission in Sakurai's Object
Marcin Hajduk, Peter A. M. van Hoof, Albert A. Zijlstra +5
The very late thermal pulse (VLTP) affects the evolution of 20\% of 1--8\, stars, repeating the last phases of the red giant within a few years and leading t…
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…