We present a study of beryllium (Be) abundances in a large sample of field solar-type dwarfs and sub-giants spanning a large range of effective temperatures...

We introduce our observational study of the orbital motion and the intrinsic variability of the double-lined spectroscopic binary beta Cen. Using 463 high...

The detection of structures in the sky with optical surface brightnesses fainter than 30 mag arcsec‑2 (3σ in 10 × 10 arcsec boxes; r-band) has remained elusive...

Context. Diagnostic diagrams based on optical emission lines, especially classical BPT diagrams, have long been used to distinguish the dominant ionisation...

Aims. We investigated whether combining gas and stellar kinematic maps provides measurable advantages in recovering galaxy mass profiles compared to using...

Widefield surveys probe clustered scalar fields - such as galaxy counts, lensing potential, etc. - which are sensitive to different cosmological and...

The faint end of the differential galaxy number counts n(m) in the Hubble Deep Field-North (HDF-N) has been determined for the F450W, F606W, and F814W filters...

We explore unsupervised machine learning for galaxy morphology analyses using a combination of feature extraction with a vector-quantized variational...

JWST has revealed an abundance of low-luminosity active galactic nuclei (AGN) at high redshifts (z > 3), pushing the limits of black hole (BH) science in the...