Using high-resolution optical spectroscopy we determine the chemical abundance of the secondary star in the binary millisecond pulsar PSR J1023+0038. We measure a metallicity of [Fe/H] = 0.48 ± 0.04 which is higher than the Solar value and in general find that the element abundances are different compared to the secondary stars in X-ray binaries

This is the sixth paper presenting the results of the MUse RAdio Loud Emission line Snapshot survey. We observed 37 radio sources from the 3C sample with z < 0.3 and a declination < 20° with the Multi Unit Spectroscopic Explorer optical integral field spectrograph at the Very Large Telescope. Here, we focus on the properties of the extended

We study galactic enrichment with rapid neutron capture (r-process) elements in cosmological, magnetohydrodynamical simulations of a Milky Way-mass galaxy. We include a variety of enrichment models, based on either neutron star mergers or a rare class of core-collapse supernova as sole r-process sources. For the first time in cosmological

CARMENES is an echelle spectrograph with two arms, one in the visible and one in the infrared, mounted on the 3.5 m telescope in Calar Alto Observatory, Spain. Since 2016, the CARMENES guaranteed observing time program has conducted a radial-velocity survey of 365 M dwarfs in search for planetary companions. However, over the past three years

Aims: We present an analysis of the 700 ks Chandra ACIS-S observation of the field around the radio galaxy J1140-2629 (the Spiderweb Galaxy) at z = 2.156, focusing on the nuclear activity in the associated large-scale environment. Methods: We identified unresolved X-ray sources in the field down to flux limits of 1.3 × 10 −16 and 3.9 × 10 −16 erg s

During the early stages of planetary formation, planets suffer severe changes in their physical and orbital properties due to internal and external forces, which also affect their primary atmospheres. The study of planets at these early stages and its comparison with the already mature planet population is crucial for a better comprehension of