The unprecedented quality of the astrometric measurements obtained with the ESA Gaia
spacecraft have initiated a revolution in Milky Way astronomy. Studies of star clusters in …

OB associations are unbound groups of young stars made prominent by their bright OB
members, and have long been thought to be the expanded remnants of dense star clusters …

Context. In the last 15 years different ground-based spectroscopic surveys have been
started (and completed) with the general aim of delivering stellar parameters and elemental …

ABSTRACT Data Release 5 (DR5) of the Radial Velocity Experiment (RAVE) is the fifth data
release from a magnitude-limited ($9\lt I\lt 12$) survey of stars randomly selected in the …

Context. Open clusters are very good tracers of the evolution of the Galactic disc. Thanks to
Gaia, their kinematics can be investigated with an unprecedented precision and accuracy …

Context. Understanding how star formation begins and propagates through molecular
clouds is a fundamental but still open question. One major difficulty in addressing this …

Young stellar associations hold a star formation record that can persist for millions of years,
revealing the progression of star formation long after the dispersal of the natal cloud. To …

We study the three dimensional arrangement of young stars in the solar neighbourhood
using the second release of the Gaia mission (Gaia DR2) and we provide a new, original …

Ages and masses of young stars are often estimated by comparing their luminosities and
effective temperatures to pre-main-sequence stellar evolution tracks, but magnetic fields and …

Spectroscopy from the final internal data release of the Gaia–ESO Survey (GES) has been
combined with Gaia EDR3 to assign membership probabilities to targets observed towards …