Stellar multiplicity is among the oldest and richest problems in astrophysics. Binary stars are
a cornerstone of stellar mass and radius measurements that underpin modern stellar …

The hierarchical model of galaxy formation predicts that the Milky Way halo is populated by
tidal debris of dwarf galaxies and globular clusters. Due to long dynamical times, debris from …

Context. The Gaia DR3 catalogue contains, for the first time, about 800 000 solutions with
either orbital elements or trend parameters for astrometric, spectroscopic, and eclipsing …

Gaia Data Release 3 contains a wealth of new data products for the community.
Astrophysical parameters are a major component of this release, and were produced by the …

Context. With the most recent Gaia data release, the number of sources with complete 6D
phase space information (position and velocity) has increased to well over 33 million stars …

Gaia Data Release 3 provides novel flux-calibrated low-resolution spectrophotometry for≃
220 million sources in the wavelength range 330 nm≤ λ≤ 1050 nm (XP spectra). Synthetic …

We present a comprehensive overview of a volume-complete sample of white dwarfs
located within 40 pc of the Sun, a significant proportion of which were detected in Gaia Data …

Context. The CARMENES instrument, installed at the 3.5 m telescope of the Calar Alto
Observatory in Almería, Spain, was conceived to deliver high-accuracy radial velocity (RV) …

Context. The multiplicity fraction of stars, down to the substellar regime, is a parameter of
fundamental importance for stellar formation, evolution, and planetology. The census of …

Context. The nearest stars provide a fundamental constraint for our understanding of stellar
physics and the Galaxy. The nearby sample serves as an anchor where all objects can be …