289 citations · 2.4k across the 48 of their papers we have counts for
53 papers
Mid-infrared Imaging of SR 12 c with JWST/MIRI: Grain Growth in an Evolved Circumplanetary Disk
Ya-Lin Wu, Claire O. Finley, Brendan P. Bowler +13
The physical properties of circumplanetary disks offer insights into the formation of giant planets and their satellites. The circumbinary planetary-mass companion SR 12 c (1200 au…
EWOCS-IX: JWST/NIRCam observations of Westerlund 2 - Identification of candidate substellar members
V. Almendros-Abad, M. G. Guarcello, K. Muzic +26
[Abridged] Investigating substellar populations in young massive clusters offers crucial insights into the formation of brown dwarfs (BDs) and the role of environmental conditions…
The Companions to B and A Stars Snapshot (C-BASS) Survey: I. Discovery of a Young Brown Dwarf Companion to HIP 17453
Marah Brinjikji, Adam J. Smith, Jennifer Patience +26
We report the detection of a new brown dwarf companion to HIP 17453 A, a chemically peculiar A0V star located at a distance of 81 pc. HIP 17453 A was observed with high-resolution…
Ultraviolet Imaging of SR 12 c with HST/WFC3: Accretion and Variability of a Giant Planet at the End Stages of Growth
Claire O. Finley, Brendan P. Bowler, Ya-Lin Wu +12
Many details of the gas accretion phase during giant planet formation remain untested. We present new 0.2$\unicode{x2013}$0.7 m UV-through-red optical imaging of the young, wide…
Classifying Cool Dwarfs: Comprehensive Spectral Typing of Field and Peculiar Dwarfs Using Machine Learning
Tianxing Zhou, Christopher A. Theissen, S. Jean Feeser +4
Low-mass stars and brown dwarfs -- spectral types (SpTs) M0 and later -- play a significant role in studying stellar and substellar processes and demographics, reaching down to pla…
Strongly polarised radio pulses from a new white-dwarf-hosting long-period transient
Sanne Bloot, Harish K. Vedantham, Cees G. Bassa +6
Long-period transients (LPTs) are a new and enigmatic class of objects that produce bright pulsations in the radio, with periods far exceeding those seen in rotationally powered pu…
Disequilibrium Chemistry, Diabatic Thermal Structure, and Clouds in the Atmosphere of COCONUTS-2b
Zhoujian Zhang, Sagnick Mukherjee, Michael C. Liu +12
Located 10.888 pc from Earth, COCONUTS-2b is a planetary-mass companion to a young (150-800 Myr) M3 star, with a wide orbital separation (6471 au) and a low companion-to-host mass…
The TEMPO Survey II: Science Cases Leveraged from a Proposed 30-Day Time Domain Survey of the Orion Nebula with the Nancy Grace Roman Space Telescope
Melinda Soares-Furtado, Mary Anne Limbach, Andrew Vanderburg +26
The TEMPO (Transiting Exosatellites, Moons, and Planets in Orion) Survey is a proposed 30-day observational campaign using the Nancy Grace Roman Space Telescope. By providing deep,…
Estimating Photometric Distances to Ultracool Dwarfs in Next Generation Space-based Infrared Surveys: Synthetic Photometry and New Absolute Magnitude Versus Spectral Type Relations for JWST, Euclid, and Roman Filters
Aniket Sanghi, Michael C. Liu, Trent J. Dupuy +3
We synthesize JWST NIRCam photometry for the F164N, F187N, F212N narrow filters, F140M, F162M, F182M, F210M medium filters, and F115W, F150W, F200W wide filters, Euclid Near Infrar…
A Volume-Limited Sample of Ultracool Dwarfs. II. The Substellar Age and Mass Functions in the Solar Neighborhood
William M. J. Best, Aniket Sanghi, Michael C. Liu +2
We present the most precise constraints to date for the mass and age distributions of single ultracool dwarfs in the solar neighborhood, based on an updated volume-limited sample o…
EWOCS-I: The catalog of X-ray sources in Westerlund 1 from the Extended Westerlund 1 and 2 Open Clusters Survey
M. G. Guarcello, E. Flaccomio, J. F. Albacete-Colombo +48
Context. With a mass exceeding several 10^4 solar masses and a rich and dense population of massive stars, supermassive young star clusters represent the most massive star-forming…
Uniform Forward-Modeling Analysis of Ultracool Dwarfs. III. Late-M and L Dwarfs in Young Moving Groups, the Pleiades, and the Hyades
Spencer A. Hurt, Michael C. Liu, Zhoujian Zhang +5
We present a uniform forward-modeling analysis of 90 late-M and L dwarfs in nearby young (~ Myr) moving groups, the Pleiades, and the Hyades using low-resolution ($R\approx…
The Hawaii Infrared Parallax Program. VI. The Fundamental Properties of 1000+ Ultracool Dwarfs and Planetary-mass Objects Using Optical to Mid-IR SEDs and Comparison to BT-Settl and ATMO 2020 Model Atmospheres
Aniket Sanghi, Michael C. Liu, William M. Best +7
We derive the bolometric luminosities () of 865 field-age and 189 young ultracool dwarfs (spectral types M6-T9, including 40 new discoveries presented here) by di…
Polarised radio pulsations from a new T dwarf binary
H. K. Vedantham, Trent J. Dupuy, E. L. Evans +6
Brown dwarfs display Jupiter-like auroral phenomena such as magnetospheric H emission and coherent radio emission. Coherent radio emission is a probe of magnetospheric accelerat…
The TEMPO Survey I: Predicting Yields of the Transiting Exosatellites, Moons, and Planets from a 30-day Survey of Orion with the Nancy Grace Roman Space Telescope
Mary Anne Limbach, Melinda Soares-Furtado, Andrew Vanderburg +12
We present design considerations for the Transiting Exosatellites, Moons, and Planets in Orion (TEMPO) Survey with the Nancy Grace Roman Space Telescope. This proposed 30-day surve…
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)…
A Uniform Retrieval Analysis of Ultra-cool Dwarfs. IV. A Statistical Census from 50 Late-T Dwarfs
Joseph A Zalesky, Kezman Saboi, Michael R. Line +5
The spectra of brown dwarfs are key to exploring the chemistry and physics that take place in their atmospheres. Late-T dwarf spectra are particularly diagnostic due to their relat…
ALMA Discovery of a Disk around the Planetary-mass Companion SR 12 c
Ya-Lin Wu, Brendan P. Bowler, Patrick D. Sheehan +6
We report an Atacama Large Millimeter/submillimeter Array 0.88 mm (Band 7) continuum detection of the accretion disk around SR 12 c, an 11 planetary-mass compan…
Using Old and New Approaches: Determining Physical Properties of Brown Dwarfs with Empirical Relations and Machine Learning Models
S. Jean Feeser, William M. J. Best
We investigate applications of machine learning models to directly infer physical properties of brown dwarfs from their photometry and spectra using . We demon…
Improved Dynamical Masses for Six Brown Dwarf Companions Using Hipparcos and Gaia EDR3
G. Mirek Brandt, Trent J. Dupuy, Yiting Li +8
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. Our dynamical…
The Second Discovery from the COol Companions ON Ultrawide orbiTS (COCONUTS) Program: A Cold Wide-Orbit Exoplanet around a Young Field M Dwarf at 10.9 pc
Zhoujian Zhang, Michael C. Liu, Zachary R. Claytor +3
We present the identification of the COCONUTS-2 system, composed of the M3 dwarf L 34-26 and the T9 dwarf WISEPA J075108.79763449.6. Given their common proper motions and parall…
Uniform Forward-Modeling Analysis of Ultracool Dwarfs. II. Atmospheric Properties of 55 Late-T Dwarfs
Zhoujian Zhang, Michael C. Liu, Mark S. Marley +2
We present a large forward-modeling analysis for 55 late-T (T7-T9) dwarfs, using low-resolution () near-infrared spectra and cloudless Sonora-Bobcat model atmospheres.…
The Hawaii Infrared Parallax Program. V. New T-Dwarf Members and Candidate Members of Nearby Young Moving Groups
Zhoujian Zhang, Michael C. Liu, William M. J. Best +2
We present a search for new planetary-mass members of nearby young moving groups (YMGs) using astrometry for 694 T and Y dwarfs, including 447 objects with parallaxes, mostly produ…
A Volume-Limited Sample of Ultracool Dwarfs. I. Construction, Space Density, and a Gap in the L/T Transition
William M. J. Best, Michael C. Liu, Eugene A. Magnier +1
We present a new volume-limited sample of L0-T8 dwarfs out to 25 pc defined entirely by parallaxes, using our recent measurements from UKIRT/WFCAM along with Gaia DR2 and literatur…