Showing astro-ph.GAShow all
2 papers · 1 filter
astro-ph.GA2025
Beyond diagnostic-diagrams: A critical exploration on the classification of ionization processes
S. F. Sánchez, C. Muñoz-Tuñón, J. Sánchez Almeida +2
Optical emission-line diagnostic diagrams, such as the classical BPT, are widely used to identify ionisation mechanisms in galaxies but often suffer from degeneracies, especially w…
astro-ph.GA2025
MeerKAT view of Hickson Compact Groups: II. HI deficiency in the core and surrounding regions
A. Sorgho, L. Verdes-Montenegro, R. Ianjamasimanana +25
Hickson compact groups (HCGs) offer an ideal environment for investigating galaxy transformation as a result of interactions. It has been established that the evolutionary sequence…