The discovery of large numbers of young low-mass stars and brown dwarfs over the past
decade has made it possible to investigate star formation and early evolution in a previously …

We combine optical, near-infrared, and mid-infrared spectra and photometry to construct
expanded spectral energy distributions for 145 field age (> 500 Myr) and 53 young (lower …

We present the first results from our high-precision infrared (IR) astrometry program at the
Canada–France–Hawaii Telescope. We measure parallaxes for 83 ultracool dwarfs …

We present a kinematic analysis of 152 low surface gravity M7-L8 dwarfs by adding 18 new
parallaxes (including 10 for comparative field objects), 38 new radial velocities, and 19 new …

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 …

Several exoplanets have recently been imaged at wide separations of> 10 AU from their
parent stars. These span a limited range of ages (< 50 Myr) and atmospheric properties, with …

Using the integral field spectrograph OSIRIS, on the Keck II telescope, broad near-infrared H-
and K-band spectra of the young exoplanet HR8799b have been obtained. In addition, six …

Most directly imaged giant exoplanets are fainter than brown dwarfs with similar spectra. To
explain their relative underluminosity, unusually cloudy atmospheres have been proposed …

ABSTRACT We present new 1–1.25 μm (z and J band) Subaru/IRCS and 2 μm (K band)
VLT/NaCo data for HR 8799 and a re-reduction of the 3–5 μm MMT/Clio data first presented …

We developed a simple, physical, and self-consistent cloud model for brown dwarfs and
young giant exoplanets. We compared different parametrizations for the cloud particle size …