Recent high-resolution mapping of the circumnuclear regions of active galactic nuclei (AGNs) has revealed the existence of geometrically thin nuclear disks, in general randomly oriented with respect to their galaxy hosts. These molecular tori have typical radii of 10 pc, and contain a few 10 7 M ⊙ of H 2, with H 2 column densities between 10 23 and

We provide a detailed characterization of the planetary system orbiting HD 85426 (TOI-1774). This bright G-type star ( $M_{\ast }$: 0.99 $\text{M}_{\odot }$; $R_{\ast }$: 1.13 $\text{R}_{\odot }$; age: 7.4 Gyr; V mag: 8.25) hosts a transiting sub-Neptune, HD 85426 b, with an orbital period of 16.71 d and a blackbody equilibrium temperature of $824^

Fast X-ray transients (FXTs) are short-lived extragalactic X-ray sources. Recent progress through multiwavelength follow-up of Einstein Probe-discovered FXTs has shown that several are related to collapsars, which can also produce $\gamma$-ray bursts (GRBs). In this paper, we investigate the nature of the FXT EP250207b. The Very Large Telescope

We present radial trends of metallicity ([Fe/H]) and abundance ratios ([X/Fe]) for several chemical elements─including C, N, Na, and the so-called α-elements (O, Mg, Si, Ca, and Ti)─in the bulge of M31, out to a projected galactocentric distance of ∼0.6 kpc. We estimated abundances using multiple approaches, including full-spectrum fitting, full

To explain the properties of the local galaxy population, theoretical models require active galactic nuclei (AGNs to inject energy into host galaxies, thereby expelling outflows of gas that would otherwise form stars. Observational tests of this scenario rely on determining outflow masses, which requires measuring the electron density ( $n_\mathrm{

Globular clusters (GCs) are dense star clusters found in all massive galaxies. Recent work has established that they follow a tight relation between their internal stellar velocity dispersion σ and luminosity, enabling accurate distance measurements. In this work, we aim to apply this GC velocity dispersion (GCVD) distance method to measure the