10 citations · 38 across the 11 of their papers we have counts for
12 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…
A Detailed Analysis of Intermediate-scale Structure in Optical Extinction Curves: Expanded Census and Two-family Classification
C. M. Gunasekera, M. Decleir, K. D. Gordon +4
The features of interstellar extinction curves serve as powerful diagnostics for interstellar dust, revealing information about its composition, size distribution, and the physical…
Fe XVIII-XXIV K beta Inner-shell Absorption Lines in the X-ray Spectra of Neutron Star and Black Hole Binaries with XRISM
Masahiro Tsujimoto, Daiki Miura, Hiroya Yamaguchi +8
The advent of the X-ray microcalorimeter spectrometer Resolve onboard the XRISM space telescope opened a new era for high-resolution X-ray spectroscopy of astrophysical plasmas. Ma…
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…
Investigating silicate, carbon, and water in the diffuse interstellar medium: the first shots from WISCI
S. T. Zeegers, Jonathan P. Marshall, Karl D. Gordon +33
The dusty interstellar medium (ISM) of the Milky Way is distributed in a complex, cloudy structure. It is fundamental to the radiation balance within the Milky Way, provides a reac…
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…
New Insights with XRISM & Cloudy: A novel Column Density Diagnostic
Chamani M. Gunasekera, Peter A. M. van Hoof, Masahiro Tsujimoto +1
We present a simple, yet powerful column density diagnostic for plasmas enabled by X-ray microcalorimeter observations. With the recent developments of the spectral simulation code…
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…
Creating a CLOUDY Compatible Database with CHIANTI version 10 Data
Chamani M. Gunasekera, Marios Chatzikos, Gary J. Ferland
Atomic and molecular data are required to conduct detailed calculations of microphysical processes performed by CLOUDY to predict the spectra of a theoretical model. One of the thr…
Self-Consistent Grain Depletions and Abundances II: Effects on strong-line diagnostics of extragalactic H II regions
Chamani M. Gunasekera, Xihan Ji, Marios Chatzikos +2
The depletion of elements onto dust grains is characterized using a generalized depletion strength for any sightline, and trend-line parameters and . The para…
Self-consistent grain depletions and abundances I: The Orion Nebula as a test case
Chamani Gunasekera, Xihan Ji, Marios Chatzikos +2
Atomic species in the interstellar medium (ISM) transition out of their gas phase mainly by depletion onto dust. In this study, we examine if there is any change to the spectral li…