136 citations · 998 across the 39 of their papers we have counts for
43 papers
Sinking Silicates I: Characterizing the benchmark system containing the T0 brown dwarf CWISE J210640.16+250729.0 using JWST
Austin Rothermich, Jacqueline K. Faherty, Ben Burningham +16
In this study, we present the full (97.3\% complete) 0.8--12.5 m spectral energy distribution (SED) of an L/T transition object, CWISE J210640.16+250729.0 (CW2106), using the Ja…
The Dyn-Atmo Survey: High-contrast Imaging Spectroscopy of the Substellar Companion HD 13724 B with the JWST NIRSpec IFU
Kielan K. W. Hoch, Alex Madurowicz, Evert Nasedkin +22
We present the first spectral analysis from the JWST Cycle 3 GO Program #6362, the Dyn-Atmo Survey of dynamical-atmospheric benchmarks, characterizing the atmospheres of directly-i…
Benchmark Brown Dwarfs as Chemical Laboratories: Linking System Bulk Properties to Atmospheric Retrievals
Viktória Kecskeméthy, Ben Burningham, Fei Wang +8
We present the first atmospheric retrieval analysis of two compositional benchmark mid-L dwarfs -- SDSSJ141659.78+500626.4 and GJ 499 C -- using the \textit{Brewster} retrieval fra…
The Diversity of Cold Worlds: a blended-light binary straddling the T/Y transition in brown dwarfs
Daniella C. Bardalez Gagliuffi, Jacqueline K. Faherty, Genaro Suarez +22
We present the first brown dwarf spectral binary characterized with JWST: WISE J014656.66+423410.0, the coldest blended-light brown dwarf binary straddling the T/Y transition. We o…
Simulating Brown Dwarf Observations for Various Mass Functions, Birthrates, and Low-mass Cutoffs
Yadukrishna Raghu, J. Davy Kirkpatrick, Federico Marocco +12
After decades of brown dwarf discovery and follow-up, we can now infer the functional form of the mass distribution within 20 parsecs, which serves as a constraint on star formatio…
JWST/NIRCam 4-5 m Imaging of the Giant Planet AF Lep b
Kyle Franson, William O. Balmer, Brendan P. Bowler +23
With a dynamical mass of , the recently discovered giant planet AF Lep b is the lowest-mass imaged planet with a direct mass measurement. Its youth and spectra…
Methane Emission From a Cool Brown Dwarf
Jacqueline K. Faherty, Ben Burningham, Jonathan Gagné +21
Beyond our solar system, aurorae have been inferred from radio observations of isolated brown dwarfs (e.g. Hallinan et al. 2006; Kao et al. 2023). Within our solar system, giant pl…
An Informed and Systematic Method to Identify Variable mid-L dwarfs
Natalia Oliveros-Gomez, Elena Manjavacas, Daniella C. Bardalez Gagliuffi +3
Most brown dwarfs show some level of photometric or spectral variability. However, finding the most variable dwarfs more suited for a thorough variability monitoring campaign remai…
Multiple Patchy Cloud Layers in the Planetary Mass Object SIMP0136+0933
Allison M. McCarthy, Philip S. Muirhead, Patrick Tamburo +6
Multi-wavelength photometry of brown dwarfs and planetary-mass objects provides insight into their atmospheres and cloud layers. We present near-simultaneous and band mu…
An Investigation of New Brown Dwarf Spectral Binary Candidates From the Backyard Worlds: Planet 9 Citizen Science Initiative
Alexia Bravo, Adam C. Schneider, Daniella Bardalez Gagliuffi +11
We present three new brown dwarf spectral binary candidates: CWISE J072708.09360729.2, CWISE J103604.84514424.4, and CWISE J134446.62732053.9, discovered by citizen scient…
Long-term 4.6m Variability in Brown Dwarfs and a New Technique for Identifying Brown Dwarf Binary Candidates
Hunter Brooks, J. Davy Kirkpatrick, Aaron M. Meisner +11
Using a sample of 361 nearby brown dwarfs, we have searched for 4.6m variability indicative of large-scale rotational modulations or large-scale long-term changes on timescales…
JWST/NIRCam discovery of the first Y+Y brown dwarf binary: WISE J033605.05014350.4
Per Calissendorff, Matthew De Furio, Michael Meyer +25
We report the discovery of the first brown dwarf binary system with a Y dwarf primary, WISE J033605.05014350.4, observed with NIRCam on JWST with the F150W and F480M filters. We…
Astrometric Accelerations as Dynamical Beacons: A Giant Planet Imaged Inside the Debris Disk of the Young Star AF Lep
Kyle Franson, Brendan P. Bowler, Yifan Zhou +13
We present the direct imaging discovery of a giant planet orbiting the young star AF Lep, a 1.2 member of the 24 3 Myr Pic moving group. AF Lep was observed a…
Examining the Rotation Period Distribution of the 40 Myr Tucana-Horologium Association with TESS
Mark Popinchalk, Jacqueline K. Faherty, Jason L. Curtis +6
The Tucana-Horologium Association (Tuc-Hor) is a 40 Myr old moving group in the southern sky. In this work, we measure the rotation periods of 313 Tuc-Hor objects with TESS light c…
On the Masses, Age, and Architecture of the VHS J1256-1257AB b System
Trent J. Dupuy, Michael C. Liu, Elise L. Evans +5
VHS J12561257 AB is an ultracool dwarf binary that hosts a wide-separation planetary-mass companion that is a key target of the {\sl JWST} Exoplanet Early Release Science (ERS)…
Disentangling the Signatures of Blended-Light Atmospheres in L/T Transition Brown Dwarfs
Afra Ashraf, Daniella C. Bardalez Gagliuffi, Elena Manjavacas +3
We present a technique to identify spectrophotometrically variable L7-T3 brown dwarfs with single-epoch, low-resolution, near-infrared SpeX spectra. We calculated spectral indices…
Beyond the Local Volume. II. Population Scaleheights and Ages of Ultracool Dwarfs in Deep HST/WFC3 Parallel Fields
Christian Aganze, Adam J. Burgasser, Matthew A. Malkan +6
Ultracool dwarfs represent a significant proportion of stars in the Milky Way,and deep samples of these sources have the potential to constrain the formation history and evolution…
The Perkins INfrared Exosatellite Survey (PINES) I. Survey Overview, Reduction Pipeline, and Early Results
Patrick Tamburo, Philip S. Muirhead, Allison M. McCarthy +9
We describe the Perkins INfrared Exosatellite Survey (PINES), a near-infrared photometric search for short-period transiting planets and moons around a sample of 393 spectroscopica…
A Wide Planetary Mass Companion Discovered Through the Citizen Science Project Backyard Worlds: Planet 9
Jacqueline K. Faherty, Jonathan Gagne, Mark Popinchalk +24
Through the Backyard Worlds: Planet 9 citizen science project we discovered a late-type L dwarf co-moving with the young K0 star BD+60 1417 at a projected separation of 37" or 1662…
Beyond the Local Volume. I. Surface Densities of Ultracool Dwarfs in Deep HST/WFC3 Parallel Fields
Christian Aganze, Adam J Burgasser, Mathew Malkan +6
Ultracool dwarf stars and brown dwarfs provide a unique probe of large-scale Galactic structure and evolution; however, until recently spectroscopic samples of sufficient size, dep…
Ross 19B: An Extremely Cold Companion Discovered via the Backyard Worlds: Planet 9 Citizen Science Project
Adam C. Schneider, Aaron M. Meisner, Jonathan Gagne +27
Through the Backyard Worlds: Planet 9 citizen science project, we have identified a wide-separation (10', 9900 au projected) substellar companion to the nearby (1…
The Brown Dwarf Kinematics Project (BDKP). V. Radial and Rotational Velocities of T Dwarfs from Keck/NIRSPEC High-Resolution Spectroscopy
Chih-Chun Hsu, Adam J. Burgasser, Christopher A. Theissen +7
We report multi-epoch radial velocities, rotational velocities, and atmospheric parameters for 37 T-type brown dwarfs observed with Keck/NIRSPEC. Using a Markov Chain Monte Carlo f…
New Candidate Extreme T Subdwarfs from the Backyard Worlds: Planet 9 Citizen Science Project
Aaron M. Meisner, Adam C. Schneider, Adam J. Burgasser +29
Schneider et al. (2020) presented the discovery of WISEA J041451.67-585456.7 and WISEA J181006.18-101000.5, which appear to be the first examples of extreme T-type subdwarfs (esdTs…
Calibration of the Halpha Age-Activity relation for M dwarfs
Rocio Kiman, Jacqueline K. Faherty, Kelle L. Cruz +6
In this work, we calibrate the relationship between Halpha emission and M dwarf ages. We compile a sample of 892 M dwarfs with Halpha equivalent width (HaEW) measurements from the…