#brown dwarfs
6 papers · 1 filter
JWST's Constraints on the Substellar IMF in NGC 2024
K. L. Luhman
The paper uses JWST NIRCam imaging and NIRSpec spectroscopy to identify brown dwarfs in the young cluster NGC 2024 and assesses whether the substellar initial mass function shows a…
A Systematic Trend in the Observed vs. Predicted Radii of Transiting Brown Dwarfs
Thomas G. Beatty
The study compares the observed masses and radii of 31 transiting brown dwarfs with several theoretical model grids and finds that the brown dwarfs are systematically larger than p…
Expanding the SPISEA Stellar Population Synthesis Software to the Substellar Regime
Caitlin Begbie, Rachel Street, Katarzyna Kruszynska +4
The paper extends the SPISEA stellar population synthesis software to include brown dwarfs, providing updated substellar initial mass functions, atmospheric models, and evolutionar…
Benchmark Brown Dwarf Systems I: Chemical Abundance Analysis of FGK Stars with Wide-Separation Brown Dwarf Companions Using PEPSI
Caprice L. Phillips, Megan Bedell, Catherine Manea +11
The authors performed a high‑resolution spectroscopic survey of 32 FGK stars that host wide‑separation brown dwarf companions, deriving precise stellar parameters and abundances fo…
MOA-2020-BLG-108Lb: A Giant Planet Beyond the Snow Line of a Low-Mass Lens Near the Lower Boundary of the Mass-Ratio Desert
Yuki K. Satoh, David P. Bennett, Takahiro Sumi +22
The paper reports the discovery of a giant planet (~10 Jupiter masses) orbiting a low‑mass (~0.6 M☉) star beyond the snow line, identified via microlensing analysis of event MOA‑20…
Latitudinal chemical and cloud variations in the atmosphere of a brown dwarf
Benjamin Charnay, Sam de Regt, Matthieu Ravet +8
The paper introduces a technique called Differential Molecular Rotational Broadening to detect latitudinal chemical differences in brown dwarf atmospheres, and applies it to VLT-CR…