Benchmark brown dwarf companions with well-determined ages and model-independent
masses are powerful tools to test substellar evolutionary models and probe the formation of …

The last decade of direct imaging (DI) searches for sub-stellar companions has uncovered a
widely diverse sample that challenges the current formation models, while highlighting the …

The orientation between a star's spin axis and a planet's orbital plane provides valuable
information about the system's formation and dynamical history. For non-transiting planets at …

We present comprehensive orbital analyses and dynamical masses for the substellar
companions Gl 229 B, Gl 758 B, HD 13724 B, HD 19467 B, HD 33632 Ab, and HD 72946 B …

A benchmark brown dwarf (BD) is a BD whose properties (eg, mass and chemical
composition) are precisely and independently measured. Benchmark BDs are valuable in …

The JWST NIRSpec integral field unit (IFU) presents a unique opportunity to observe directly
imaged exoplanets from 3 to 5 μm at moderate spectral resolution (R∼ 2700) and thereby …

We present a cross-calibration of Hipparcos and Gaia EDR3 intended to identify
astrometrically accelerating stars and to fit orbits to stars with faint, massive companions …

The eccentricity of a substellar companion is an important tracer of its formation history.
Directly imaged companions often present poorly constrained eccentricities. A recently …

We present htof, an open-source tool for interpreting and fitting the intermediate astrometric
data (IAD) from both the 1997 and 2007 reductions of Hipparcos, the scanning law of Gaia …

We observed HD 19467 B with JWST's NIRCam in six filters spanning 2.5–4.6 μm with the
long-wavelength bar coronagraph. The brown dwarf HD 19467 B was initially identified …