Analysis and diagnostics of extragalactic shock-excited regions using MUSE’s IFU spectroscopic observations

Abstract

This work presents an analysis of shock-excited regions in the galaxies PGC128348 and Cartwheel based on MUSE’s IFU spectroscopic data. Applying 2D emission-line diagnostics, 27 shock-excited regions are identified in PGC128348 (12 classified as supernova remnants) and 43 in Cartwheel (all bubbles/superbubbles). Spectral analysis was used to derive gas velocity dispersions and electron densities, while shock velocities are estimated via MAPPINGS V shock models. Results show lower velocity dispersion and higher shock velocities in the outer galactic regions, reflecting the influence of local ISM density on shock evolution.