Ultra-deep optical imaging surveys have reached unprecedented depths (≳30 mag arcsec ‑2; 3σ, 10″ × 10″), thus facilitating the study of very faint galactic structures. However, the ultraviolet bands, which are key to the study of stellar populations, remain essentially unexplored at these depths. In this paper, we present a detailed surface

We present an innovative deblending method that uses the variation of seeing with wavelength to isolate AGN and host galaxy spectra in IFS data. We demonstrate its efficacy through application to MUSE observations of the type I AGN MRK 926.

The Cygnus OB2 association forms the core of the Cygnus-X complex, the closest region to Earth with significant massive star formation. Situated less than 2 kpc away, Cygnus OB2 hosts a young population of OB stars (aged between 1.5 and 6 Myr), making it an ideal laboratory for testing evolutionary channels of massive stars. The newly commissioned

The past decade represented the kick-off and settlement of multi-messenger and time-domain astronomy, coincident with the blooming of transient TeV astronomy. Over the past decade, new sources of very-high-energy (VHE) gamma rays have been discovered, opening new physics in this energy regime: the discovery of a TeV counterpart of long gamma-ray

The Carina Nebula is one of the major and more massive regions of our Galaxy that contains a large number of massive O-type stars that can be analyzed. Benefiting from astrometry by Gaia DR3 and high-quality spectra from different surveys and stellar libraries, a detailed spectroscopic characterization of its O-type stellar content can be performed

We report the discovery of TOI-3493 b, a sub-Neptune-sized planet on an 8.15-d orbit transiting the bright (V=9.3) G0 star HD 119355 (aka TIC 203377303) initially identified by NASA's TESS space mission. With the aim of confirming the planetary nature of the transit signal detected by TESS and determining the mass of the planet, we performed an