Context. Understanding the origin of stars within a galaxy, namely whether they formed in situ or were accreted from other galaxies (ex situ), is key to constraining its evolution. When they are spatially resolved, these components provide crucial insights into the mass assembly history of a galaxy. Aims. We predict the spatial distribution of the

The "Neptunian ridge" is a recently identified peak in the frequency of planets with sizes between that of Neptune and Saturn orbiting their host stars with periods between 3 and 6 days. These planets may have formed similarly to their larger, hot Jupiter counterparts in the "3 day pileup," through a dynamically excited migration pathway. The

We investigated the origin and formation mechanisms of the intracluster light (ICL) in THE THREE HUNDRED simulations, a set of 324 hydrodynamically resimulated massive galaxy clusters. The ICL, a diffuse component comprised of stars not bound to any individual galaxy, serves as a critical tracer of cluster formation and evolution. Using two

Context. O-type stars are key drivers of galactic evolution. For the first time, modern spectroscopic surveys combined with Gaia distances are enabling reliable estimates of the fundamental parameters of several hundred Galactic O-type stars, spanning the full range of spectral types and luminosity classes. Aims. We aim to provide updated

The central regions of disc galaxies host a rich variety of stellar structures: nuclear discs, bars, bulges, and boxy-peanut bulges. These components are often difficult to disentangle, both photometrically and kinematically, particularly in star-forming galaxies where dust obscuration and complex stellar motions complicate interpretation. In this

Context. Cosmic voids are underdense regions within the large-scale structure of the Universe, spanning a wide range of physical scales ─ from a few megaparsecs to the largest observable structures. Their distinctive properties make them valuable cosmological probes and unique laboratories for galaxy formation studies. A key aspect to investigate