Context. The motion of stars has been used to reveal details of the complex history of the
Milky Way, in constant interaction with its environment. Nevertheless, to reconstruct the …

Gravitational-wave detections are starting to allow us to probe the physical processes in the
evolution of very massive stars through the imprints they leave on their final remnants …

The critical first step in the search for life on exoplanets over the next decade is to determine
whether rocky planets transiting small M-dwarf stars possess atmospheres and, if so, what …

ABSTRACT The James Webb Space Telescope will allow to spectroscopically study an
unprecedented number of galaxies deep into the reionization era, notably by detecting [O iii] …

As matter accretes onto the central supermassive black holes in active galactic nuclei
(AGNs), X-rays are emitted. We present a population synthesis model that accounts for the …

We study the evolution of the binary black hole (BBH) mass distribution across cosmic time.
The second gravitational-wave transient catalog (GWTC-2) from LIGO/Virgo contains BBH …

We use very long baseline interferometry to measure the proper motions of three black hole
X-ray binaries (BHXBs). Using these results together with data from the literature and Gaia …

M dwarfs remain active over longer timescales than their Sunlike counterparts, with
potentially devastating implications for the atmospheres of their planets. However, the age at …

Planets orbiting M-dwarf stars are prime targets in the search for rocky exoplanet
atmospheres. The small size of M dwarfs renders their planets exceptional targets for …

Giant exoplanets orbiting close to their host stars are unlikely to have formed in their present
configurations. These 'hot Jupiter'planets are instead thought to have migrated inward from …