Year: 2025
Type: article
Abstract: We present a renewed wrapper for multicomponent photoionization modeling (MPhM) of the nebular environment (NebEn) surrounding star-forming regions, based on the new version (c23.01) of G. Ferland's code CLOUDY. Our approach to MPhM of NebEn accounts for the internal structure of the HII region and its evolution driven by superwind expansion. An evolutionary grid of NebEn MPhM was calculated using both the old (based on CLOUDY c08.00) and the newly developed MPhM wrappers. The resulting ionization structures, emissivities of diagnostically important emission lines, and modeled spectra were compared to estimate the impact of a coding error related to Lyα line formation, present in the old version of CLOUDY, on the NebEn MPhM results. Based on this comparison, conclusions were drawn regarding the reliability of MPhM results obtained using the older code version.
Authors: B. Ya. Melekh, I. O. Koshmak
Institution: Lviv University
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W4411636047