For the first time, the sulphur abundance relative to hydrogen (S/H) in the narrow-line
regions of a sample of Seyfert 2 nuclei (Sy 2s) has been derived via direct estimation of the …

For the first time, the helium abundance relative to hydrogen (He/H), which relied on direct
measurements of the electron temperature, has been derived in the narrow line regions …

Context. Multi-phase outflows play a central role in galaxy evolution shaping the properties
of galaxies. Understanding outflows and their effects in low luminosity active galactic nuclei …

Growing evidence in support of a connection between active galactic nuclei (AGN) activity
and the ram pressure stripping (RPS) phenomenon has been found both observationally …

Context. Future and ongoing infrared and radio observatories such as JWST, METIS, and
ALMA will increase the amount of rest-frame IR spectroscopic data for galaxies by several …

Heavy element accumulation and stellar mass assembly are fundamental processes in the
formation and evolution of galaxies. However, the key elements that govern them, such as …

Context. Giant (> 100 kpc) nebulae associated with active galaxies provide rich information
about the circumgalactic medium around galaxies, its link with the interstellar medium of the …

For the first time, the argon abundance relative to hydrogen abundance (Ar/H) in the narrow
line region of a sample of Seyfert 2 nuclei has been derived. In view of this, optical narrow …

Context. The infrared (IR) range is extremely useful in the context of chemical abundance
studies of the gas-phase interstellar medium (ISM) due to the large variety of ionic species …

While in massive galaxies active galactic nucleus (AGN) feedback plays an important role,
the role of AGN feedback is still under debate in dwarf galaxies. With well spatially resolved …