Astrometry provides the foundation for astrophysics. Accurate positions are required for the
association of sources detected at different times or wavelengths, and distances are …

BANYAN Σ is a new Bayesian algorithm to identify members of young stellar associations
within 150 pc of the Sun. It includes 27 young associations with ages in the range∼ 1–800 …

We describe a large-scale far-infrared line and continuum survey of protoplanetary disk
through to young debris disk systems carried out using the ACS instrument on the Herschel …

We present a substantial extension of the millimeter (mm) wave continuum photometry
catalog for circumstellar dust disks in the Taurus star-forming region, based on a new" …

Estimates of the mass and age of young stars from their location in the HR diagram are
limited by not only the typical observational uncertainties that apply to field stars, but also by …

Circumstellar disks are thought to experience a rapid" transition" phase in their evolution that
can have a considerable impact on the formation and early development of planetary …

We present a survey at subarcsecond resolution of the 340 GHz dust continuum emission
from 50 nearby protoplanetary disks, based on new and archival observations with the …

We present a large, uniform analysis of young (≈ 10–150 Myr) ultracool dwarfs, based on
new high-precision infrared (IR) parallaxes for 68 objects. We find that low-gravity (vl-g) late …

Young and directly imaged exoplanets offer critical tests of planet-formation models that are
not matched by radial velocity surveys of mature stars. These targets have been extremely …

Context. Understanding the formation mechanisms of protoplanetary disks and multiple
systems and also their pristine properties are key questions for modern astrophysics. The …