Star clusters are among the first celestial objects catalogued by early astronomers. As
simple and coeval populations, their study has been instrumental in charting the properties …

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 …

We determined effective temperatures, surface gravities, and metallicities for a sample of
343 M dwarfs observed with CARMENES, the double-channel, high-resolution spectrograph …

We present final Spitzer trigonometric parallaxes for 361 L, T, and Y dwarfs. We combine
these with prior studies to build a list of 525 known L, T, and Y dwarfs within 20 pc of the …

In recent years, the advent of a new generation of radial velocity instruments has allowed us
to detect planets with increasingly lower mass and to break the one Earth-mass barrier. Here …

In this paper, we present an analysis of near-infrared spectropolarimetric and velocimetric
data of the young M dwarf AU Mic, collected with SPIRou at the Canada–France–Hawaii …

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

Current theories of planetary evolution predict that infant giant planets have large radii and
very low densities before they slowly contract to reach their final size after about several …

Context. Large surveys with new-generation high-contrast imaging instruments are needed
to derive the frequency and properties of exoplanet populations with separations from~ 5 to …

AU Mic is a young planetary system with a resolved debris disc showing signs of planet
formation and two transiting warm Neptunes near mean-motion resonances. Here we …