Astrometry and Photometry for≈ 1000 L, T, and Y Dwarfs from the UKIRT Hemisphere Survey

AC Schneider, JA Munn, FJ Vrba… - The Astronomical …, 2023 - iopscience.iop.org
We present the positions, proper motions, and near-infrared photometry for 966 known
objects with spectral types later than M that were observed as part of the the UKIRT …

An atmospheric retrieval of the brown dwarf Gliese 229B

E Calamari, JK Faherty, B Burningham… - The Astrophysical …, 2022 - iopscience.iop.org
We present results from an atmospheric retrieval analysis of Gl 229B using the Brewster
retrieval code. We find the best fit model to be cloud-free, consistent with the T dwarf retrieval …

[HTML][HTML] Rotation and Abundances of the Benchmark Brown Dwarf HD 33632 Ab from Keck/KPIC High-resolution Spectroscopy

CC Hsu, JJ Wang, JW Xuan, JB Ruffio… - The Astrophysical …, 2024 - iopscience.iop.org
We present the projected rotational velocity and molecular abundances for HD 33632 Ab
obtained via Keck Planet Imager and Characterizer (KPIC) high-resolution spectroscopy. HD …

Predicting Cloud Conditions in Substellar Mass Objects Using Ultracool Dwarf Companions

E Calamari, JK Faherty, C Visscher… - The Astrophysical …, 2024 - iopscience.iop.org
We present results from conducting a theoretical chemical analysis of a sample of
benchmark companion brown dwarfs whose primary star is of type F, G, or K. We summarize …

CWISE J014611. 20–050850.0 AB: The Widest Known Brown Dwarf Binary in the Field

E Softich, AC Schneider, J Patience… - The Astrophysical …, 2022 - iopscience.iop.org
While stars are often found in binary systems, brown dwarf binaries are much rarer. Brown
dwarf–brown dwarf pairs are typically difficult to resolve because they often have very small …

Redder than Red: Discovery of an Exceptionally Red L/T Transition Dwarf

AC Schneider, AJ Burgasser… - The Astrophysical …, 2023 - iopscience.iop.org
We present the discovery of CWISE J050626. 96+ 073842.4 (CWISE J0506+ 0738), an L/T
transition dwarf with extremely red near-infrared colors discovered through the Backyard …

The puzzle of the formation of T8 dwarf Ross 458c

J Gaarn, B Burningham, JK Faherty… - Monthly Notices of …, 2023 - academic.oup.com
At the lowest masses, the distinction between brown dwarfs and giant exoplanets is often
blurred and literature classifications rarely reflect the deuterium burning boundary …

Discovery of 34 low-mass comoving systems using NOIRLab Source Catalog DR2

F Kiwy, JK Faherty, A Meisner… - The Astronomical …, 2022 - iopscience.iop.org
We present the discovery of 34 comoving systems containing an ultracool dwarf found by
means of the NOIRLab Source Catalog (NSC) DR2. NSC's angular resolution of∼ 1''allows …

Multiplicity of stars with planets in the solar neighbourhood

J González-Payo, JA Caballero, J Gorgas… - Astronomy & …, 2024 - aanda.org
Aims. We intended to quantify the impact of stellar multiplicity on the presence and
properties of exoplanets. Methods. We investigated all exoplanet host stars at less than 100 …

An Investigation of New Brown Dwarf Spectral Binary Candidates From the Backyard Worlds: Planet 9 Citizen Science Initiative

A Bravo, AC Schneider, DB Gagliuffi… - The Astronomical …, 2023 - iopscience.iop.org
We present three new brown dwarf spectral-binary candidates: CWISE J072708. 09−
360729.2, CWISE J103604. 84− 514424.4, and CWISE J134446. 62− 732053.9, discovered …