Observational advances over the last decade have enabled high-resolution, interferometric
studies of forming multiple systems, statistical surveys of multiplicity in star-forming regions …

The basic geometry of the Solar System—the shapes, spacings, and orientations of the
planetary orbits—has long been a subject of fascination as well as inspiration for planet …

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 …

We present a statistical analysis of the first 300 stars observed by the Gemini Planet Imager
Exoplanet Survey. This subsample includes six detected planets and three brown dwarfs; …

Building on the legacy of the Sloan Digital Sky Survey (SDSS-I and II), SDSS-III is a program
of four spectroscopic surveys on three scientific themes: dark energy and cosmological …

A few studies have reported a significant dearth of exoplanets with Neptune mass and
radius with orbital periods below 2–4 d. This cannot be explained by observational biases …

Stellar multiplicity is a ubiquitous outcome of the star-formation process. The frequency and
main characteristics of multiple systems, and their dependence on primary mass and …

We present the results of a comprehensive assessment of companions to solar-type stars. A
sample of 454 stars, including the Sun, was selected from the Hipparcos catalog with π> 40 …

We report the statistical properties of stars, brown dwarfs and multiple systems obtained from
the largest radiation hydrodynamical simulation of star cluster formation to date that resolves …

Comprehensive wide-field imaging and spectroscopic surveys of the sky have played a key
role in astronomy, leading to fundamental new breakthroughs in our understanding of the …