Meeting the Cool New Neighbors V: A 2MASS-Selected Sample of Ultracool Dwarfs

Abstract

We present initial results of our effort to create a statistically robust, volume-limited sample of ultracool dwarfs from the 2MASS Second Incremental Data Release. We are engaged in a multifaceted search for nearby late-type dwarfs and this is the first installment of our search using purely photometric selection. The goal of this work is a determination of the low-mass star and brown dwarf luminosity function in the infrared. Here, we outline the construction of the sample, dubbed 2MU2, and present our first results, including the discovery of 186 M7--L6 dwarfs--47 of these are likely to be within 20 pc of the Sun. These results represent 66% of the ultracool candidates in our sample yet constitute an 127% increase in the number of ultracool dwarfs known within the volume searched (covering 40% of the sky out to 20 pc). In addition, we have identified 10 M4--M6.5 objects that are likely to be within 20 pc (or within 1$\sigma$). Finally, based on these initial data, we present a preliminary luminosity function and discuss several interesting features of the partial sample presented here. Once our sample is complete, we will use our measured luminosity function to constrain the mass function of low-mass stars and brown dwarfs.

Accepted to AJ and scheduled for November 2003 issue. 80 pages (25 pages of text, 16 figures, 39 pages for 21 tables)

References in corpus (3)

• Multiplicity of Nearby Free-floating Ultra-cool Dwarfs: a HST-WFPC2 search for companions
• The Spectra of T Dwarfs. II. Red Optical Data
• Serendipitous Discovery and Parallax of a Nearby L Dwarf

Cited by in corpus (307)

• The UKIRT Infrared Deep Sky Survey ZYJHK Photometric System: Passbands and Synthetic Colours
• A Giant Planet Candidate near a Young Brown Dwarf
• A probable giant planet imaged in the Beta Pictoris disk
• The Hawaii Infrared Parallax Program. I. Ultracool Binaries and the L/T Transition
• Near-Infrared Photometry and Spectroscopy of L and T Dwarfs: the Effects of Temperature, Clouds, and Gravity
• The Solar Neighborhood XVII: Parallax Results from the CTIOPI 0.9m Program -- Twenty New Members of the RECONS 10 Parsec Sample
• A Unified Near Infrared Spectral Classification Scheme for T Dwarfs
• L' and M' Photometry of Ultracool Dwarfs
• Preliminary Parallaxes of 40 L and T Dwarfs from the U.S. Naval Observatory Infrared Astrometry Program
• The UKIRT Wide Field Camera ZYJHK Photometric System: Calibration from 2MASS
• A Catalog of Northern Stars With Annual Proper Motions Larger Than 0.15 Seconds of Arc (LSPM catalog - North)
• L and T Dwarf Models and the L to T Transition
• The 0.8-14.5 micron Spectra of Mid-L to Mid-T Dwarfs: Diagnostics of Effective Temperature, Grain Sedimentation, Gas Transport, and Surface Gravity
• Fundamental Parameters and Spectral Energy Distributions of Young and Field Age Objects with Masses Spanning the Stellar to Planetary Regime
• A Near-Infrared Spectroscopic Study of Young Field Ultracool Dwarfs
• A Re-appraisal of the Habitability of Planets Around M Dwarf Stars
• Atmospheric Parameters of Field L and T Dwarfs
• The 2MASS Wide-Field T Dwarf Search. III. Seven New T Dwarfs and Other Cool Dwarf Discoveries
• Discoveries from a Near-infrared Proper Motion Survey using Multi-epoch 2MASS Data
• The Sloan Digital Sky Survey Data Release 7 Spectroscopic M Dwarf Catalog I: Data
• Young L Dwarfs Identified in the Field: A Preliminary Low-Gravity, Optical Spectral Sequence from L0 to L5
• BANYAN. II. Very Low Mass and Substellar Candidate Members to Nearby, Young Kinematic Groups With Previously Known Signs of Youth
• Meeting the Cool Neighbors. IX. The Luminosity Function of M7-L8 Ultracool Dwarfs in the Field
• The Brown Dwarf Kinematics Project (BDKP) I. Proper Motions and Tangential Velocities for a Large Sample of Late-type M, L and T Dwarfs
• Weather on Other Worlds. II. Survey Results: Spots Are Ubiquitous on L and T Dwarfs
• A Spectroscopic Catalog of the Brightest (J<9) M Dwarfs in the Northern Sky
• Population Properties of Brown Dwarf Analogs to Exoplanets
• The Hawaii Infrared Parallax Program. II. Young Ultracool Field Dwarfs
• The Extremely Red, Young L Dwarf PSO J318-22: A Free-Floating Planetary-Mass Analog to Directly Imaged Young Gas-Giant Planets
• Radio Observations of a Large Sample of Late-M, L, and T Dwarfs: The Distribution of Magentic Field Strengths
• A Sample of Very Young Field L Dwarfs and Implications for the Brown Dwarf "Lithium Test" at Early Ages
• Spitzer Infrared Spectrograph Observations of M, L, and T Dwarfs
• BANYAN. VII. A New Population of Young Substellar Candidate Members of Nearby Moving Groups from the BASS Survey
• A Patchy Cloud Model for the L to T Dwarf Transition
• Hubble Space Telescope NICMOS Observations of T Dwarfs: Brown Dwarf Multiplicity and New Probes of the L/T Transition
• Low Luminosity Companions to White Dwarfs
• Planets Around Low-Mass Stars (PALMS). IV. The Outer Architecture of M Dwarf Planetary Systems
• Strong Brightness Variations Signal Cloudy-to-Clear Transition of Brown Dwarfs
• Identifying the Young Low-mass Stars within 25 pc. I. Spectroscopic Observations
• Activity and Kinematics of Ultracool Dwarfs Including An Amazing Flare Observation
• Individual Dynamical Masses of Ultracool Dwarfs
• Spitzer/IRAC Photometry of M, L, and T Dwarfs
• CARMENES input catalogue of M dwarfs. I. Low-resolution spectroscopy with CAFOS
• Binaries and the L Dwarf/T Dwarf Transition
• Meeting the Cool Neighbors VIII: A preliminary 20-parsec census from the NLTT catalogue
• Mid-Infrared Photometry of Cold Brown Dwarfs: Diversity in Age, Mass and Metallicity
• Identifying the young low-mass stars within 25 pc. II. Distances, kinematics and group membership
• Subtle Signatures of Multiplicity in Late-type Dwarf Spectra: The Unresolved M8.5 + T5 Binary 2MASS J03202839-0446358
• Discovery of a young planetary mass companion to the nearby M dwarf VHS J125601.92-125723.9
• The Field Substellar Mass Function Based on the Full-sky 20-pc Census of 525 L, T, and Y Dwarfs
• Discovery of Two Nearby, Peculiar L Dwarfs from the 2MASS Proper Motion Survey: Young or Metal-Rich?
• Colors and Kinematics of L Dwarfs From the Sloan Digital Sky Survey
• High Precision Dynamical Masses of Very Low Mass Binaries
• A search for binary systems among the nearest L dwarfs
• The AllWISE Motion Survey and The Quest for Cold Subdwarfs
• The Solar Neighborhood XXXII. The Hydrogen Burning Limit
• Clouds, Gravity and Metallicity in Blue L dwarfs: The Case of 2MASS J11263991-5003550
• The Solar Neighborhood X: New Nearby Stars in the Southern Sky and Accurate Photometric Distance Estimates for Red Dwarfs
• T Dwarfs and the Substellar Mass Function. I. Monte Carlo Simulations
• SpeX Spectroscopy of Unresolved Very Low Mass Binaries. II. Identification of Fourteen Candidate Binaries with Late-M/Early-L and T Dwarf Components
• Preliminary Trigonometric Parallaxes of 184 Late-T and Y Dwarfs and an Analysis of the Field Substellar Mass Function into the "Planetary" Mass Regime
• BANYAN. XIII. A First Look at Nearby Young Associations with Gaia Data Release 2
• Photometry and Proper Motions of M, L, and T Dwarfs from the Pan-STARRS1 3$\pi$ Survey
• Auroral radio emission from late L and T dwarfs: A new constraint on dynamo theory in the substellar regime
• The Solar Neighborhood. XXXIII. Parallax Results from the CTIOPI 0.9m Program: Trigonometric Parallaxes of Nearby Low-Mass Active and Young Systems
• The Radio Activity-Rotation Relation of Ultracool Dwarfs
• Cool Young Stars in the Northern Hemisphere: Beta Pictoris and AB Doradus Moving Group Candidates
• A Sensitive Search for Variability in Late L Dwarfs: The Quest for Weather
• BANYAN. V. A Systematic All-Sky Survey for New Very Late-Type Low-Mass Stars and Brown Dwarfs in Nearby Young Moving Groups
• Refining the Census of the Upper Scorpius Association with Gaia
• Far Infrared Prperties of M Dwarfs
• CARMENES input catalogue of M dwarfs II. High-resolution imaging with FastCam
• The Substellar Mass Function: A Bayesian Approach
• Discovery of the brightest T dwarf in the northern hemisphere
• The Strongest Magnetic Fields on the Coolest Brown Dwarfs
• Optical Spectroscopy of 2MASS Color-Selected Ultracool Subdwarfs
• Finding benchmark brown dwarfs to probe the IMF as a function of time
• SPECULOOS -- Ultracool Dwarf Transit Survey: Target List and Strategy
• Resolved Spectroscopy of M Dwarf/L Dwarf Binaries. I. DENIS J220002.05-303832.9AB
• A Volume-Limited Sample of Ultracool Dwarfs. I. Construction, Space Density, and a Gap in the L/T Transition
• Trends in Ultracool Dwarf Magnetism. I. X-Ray Suppression and Radio Enhancement
• Direct evidence of a sub-stellar companion around CT Cha
• Quiescent Radio Emission from Southern Late-type M Dwarfs and a Spectacular Radio Flare from the M8 Dwarf DENIS 1048-3956
• 2MASS J05185995-2828372: Discovery of an Unresolved L/T Binary
• Discovery of Two Very Low-Mass Binaries: Final Results of an Adaptive Optics Survey of Nearby M6.0-M7.5 Stars
• Doppler Imaging of Exoplanets and Brown Dwarfs
• Studying the Physical Diversity of Late-M Dwarfs with Dynamical Masses
• Meeting the Cool Neighbors X: Ultracool dwarfs from the 2MASS All-Sky Data Release
• The First Ultra-Cool Brown Dwarf Discovered by the Wide-field Infrared Survey Explorer
• Discovery of very nearby ultracool dwarfs from DENIS
• A Volume-limited Sample of 63 M7--M9.5 Dwarfs I. Space Motion, Kinematic Age, and Lithium
• Star Formation via the Little Guy: A Bayesian Study of Ultracool Dwarf Imaging Surveys for Companions
• Discovery of new nearby L and late-M dwarfs at low Galactic latitude from the DENIS database
• A Search for L/T Transition Dwarfs With Pan-STARRS1 and WISE. II. L/T Transition Atmospheres and Young Discoveries
• The AllWISE Motion Survey, Part 2
• Discovery of an Unusually Red L-type Brown Dwarf
• Wide, Cool and Ultracool Companions to Nearby Stars from Pan-STARRS1
• The substellar mass function in sigma Orionis. II. Optical, near-infrared and IRAC/Spitzer photometry of young cluster brown dwarfs and planetary-mass objects
• Discovery of an M9.5 Candidate Brown Dwarf in the TW Hydrae Association - DENIS J124514.1-442907
• A Panchromatic View of Brown Dwarf Aurorae
• Meeting the Cool Neighbors VII: Spectroscopy of faint, red NLTT dwarfs
• Ultracool Dwarfs Observed with the Spitzer Infrared Spectrograph. II. Emergence and Sedimentation of Silicate Clouds in L Dwarfs, and Analysis of the Full M5--T9 Field Dwarf Spectroscopic Sample
• BANYAN. IX. The Initial Mass Function and Planetary-Mass Object Space Density of the TW Hya Association
• Nearby M, L, and T Dwarfs Discovered by the Wide-field Infrared Survey Explorer (WISE)
• An independent analysis of the brown dwarf atmosphere monitoring (BAM) data: large-amplitude variability is rare outside the L/T transition
• The Brown dwarf Atmosphere Monitoring (BAM) Project I: The largest near-IR monitoring survey of L- & T-dwarfs
• K2 Ultracool Dwarfs Survey. III. White Light Flares are Ubiquitous in M6-L0 Dwarfs
• Spectroscopic classification of red high proper motion objects in the Southern Sky
• The ultracool-field dwarf luminosity-function and space density from the Canada-France Brown Dwarf Survey
• The Brown Dwarf Kinematics Project (BDKP). IV. Radial Velocities of 85 Late-M and L dwarfs with MagE
• The Hawaii Infrared Parallax Program. IV. A Comprehensive Parallax Survey of L0-T8 dwarfs with UKIRT
• Flares in Open Clusters with K2. II. Pleiades, Hyades, Praesepe, Ruprecht 147, and M67
• A Survey for H-alpha Emission from Late L dwarfs and T dwarfs
• Nearby stars from the LSPM-north Proper Motion Catalog. I. Main Sequence Dwarfs and Giants Within 33 Parsecs of the Sun
• Spectroscopic characterization of 78 DENIS ultracool dwarf candidates in the solar neighborhood and the Upper Sco OB association
• Multiepoch Radial Velocity Observations of L Dwarfs
• A Census of the Stellar Populations in the Sco-Cen Complex
• Search for nearby stars among proper motion stars selected by optical-to-infrared photometry III. Spectroscopic distances of 322 NLTT stars
• An Infrared High Proper Motion Survey Using 2MASS and SDSS: Discovery of M, L and T Dwarfs
• Optical Linear Polarization of Late M- and L-Type Dwarfs
• Using the Galactic Dynamics of M7 Dwarfs to Infer the Evolution of Their Magnetic Activity
• Parallaxes of Southern Extremely Cool objects (PARSEC) II: Spectroscopic Follow-up and Parallaxes of 52 Targets
• Contamination by field late-M, L and T dwarfs in deep surveys
• Thirty New Low-Mass Spectroscopic Binaries
• Discovery of a High Proper Motion L Dwarf Binary: 2MASS J15200224-4422419AB
• Discovery of a Young L Dwarf Binary, SDSS J224953.47+004404.6AB
• Parallaxes of Southern Extremely Cool objects - I: Targets, Proper motions and first results
• SDSS J141624.08+134826.7: A Nearby Blue L Dwarf From the Sloan Digital Sky Survey
• Discovery of Five Very Low Mass Close Binaries, Resolved in the Visible with Lucky Imaging
• New Neighbors: Parallaxes of 18 nearby stars selected from the LSPM-north catalog
• Discovery of 9 New Companions to Nearby Young M Stars with the Altair AO System
• Rotation Periods, Inclinations, and Obliquities of Cool Stars Hosting Directly Imaged Substellar Companions: Spin-Orbit Misalignments are Common
• SDSS J042348.57-041403.5AB: A Brown Dwarf Binary Straddling the L/T Transition
• Surface Gravities for 228 M, L, and T Dwarfs in the NIRSPEC Brown Dwarf Spectroscopic Survey
• Discovery and characterisation of detached M-dwarf eclipsing binaries in the WFCAM Transit Survey
• Near Infrared Monitoring of Ultracool Dwarfs: Prospects for Searching for Transiting Companions
• White Dwarf - Red Dwarf Systems Resolved with the Hubble Space Telescope. II. Full Snapshot Survey Results
• New, nearby bright southern ultracool dwarfs
• Southern wide very low-mass stars and brown dwarfs in resolved binary and multiple systems
• The Lowest Mass Member of the beta Pictoris Moving Group
• SDSS J080531.84+481233.0: An Unresolved L Dwarf/T Dwarf Binary
• A Search for Variability in Exoplanet Analogues and Low-Gravity Brown Dwarfs
• The Ultracool SpeXtroscopic Survey. I. Volume-Limited Spectroscopic Sample and Luminosity Function of M7$-$L5 Ultracool Dwarfs
• Discovery of An Unusually Blue L Dwarf Within 10 pc of the Sun
• Pleiades low-mass brown dwarfs: the cluster L dwarf sequence
• Parallax and Luminosity Measurements of an L Subdwarf
• Two fast X-ray transients in archival Chandra data
• Short-Term H-alpha Variability in M Dwarfs
• Exploring the Role of Sub-micron Sized Dust Grains in the Atmospheres of Red L0 - L6 Dwarfs
• Discovery of a nearby L-T transition object in the Southern Galactic plane
• Proper motions of field L and T dwarfs
• The optical+infrared L dwarf spectral sequence of young planetary-mass objects in the Upper Scorpius association
• Southern Infrared Proper Motion Survey II: A sample of low mass stars with μ> 0.1''/yr
• ASASSN-16ae: A Powerful White-Light Flare on an Early-L Dwarf
• A 2MASS/AllWISE Search for Extremely Red L Dwarfs -- The Discovery of Several Likely L Type Members of $\beta$ Pic, AB Dor, Tuc-Hor, Argus, and the Hyades
• Ultra-cool dwarfs: new discoveries, proper motions, and improved spectral typing from SDSS and 2MASS photometric colors
• New High Proper Motion Stars from the Digitized Sky Survey. IV. Completion of the Southern Survey and 170 Additional Stars with pm>0.45 arcsec/yr
• A search for substellar members in the Praesepe and sigma Orionis clusters
• New M, L, and T Dwarf Companions to Nearby Stars from the Wide-field Infrared Survey Explorer
• An Adaptive Optics Survey of M6.0-M7.5 Stars: Discovery of Three Very Low Mass Binary Systems Including Two Probable Hyades Members
• Photometric brown-dwarf classification. I. A method to identify and accurately classify large samples of brown dwarfs without spectroscopy
• SIMP J2154-1055: A New Low-Gravity L4$\beta$ Brown Dwarf Candidate Member of the Argus Association
• Sporadic Long-term Variability in Radio Activity from a Brown Dwarf
• Intermediate Resolution Near-Infrared Spectroscopy of 36 late-M Dwarfs
• Trends in Ultracool Dwarf Magnetism. II. The Inverse Correlation Between X-ray Activity and Rotation as Evidence for a Bimodal Dynamo
• Discovery of the first wide L dwarf + giant binary system and eight other ultra-cool dwarfs in wide binaries
• The multiplicity of planet host stars - New low-mass companions to planet host stars
• Volume-limited radio survey of ultracool dwarfs
• Resolved Spectroscopy of M Dwarf/L Dwarf Binaries. II. 2MASS J 17072343-0558249AB
• A Spectroscopic Binary at the M/L Transition
• Discovery of a 66 mas Ultracool Binary with Laser Guide Star Adaptive Optics
• WISE/2MASS-SDSS brown dwarfs candidates using Virtual Observatory tools
• New constraints on the formation and settling of dust in the atmospheres of young M and L dwarfs
• Towards a complete stellar mass function of the Hyades. I. Pan-STARRS1 optical observations of the low-mass stellar content
• Constraining the Distribution of L- & T-Dwarfs in the Galaxy
• A New Brown Dwarf Desert? A Scarcity of Wide Ultracool Binaries
• On the kinematic age of brown dwarfs: Radial velocities and space motions of 43 nearby L dwarfs
• Discovery of a Very Low Mass Triple with Late-M and T Dwarf Components: LP 704-48/SDSS J0006-0852AB
• Primeval very low-mass stars and brown dwarfs - IV. New L subdwarfs, Gaia astrometry, population properties, and a blue brown dwarf binary
• Variability and periodicity of field M dwarfs revealed by multichannel monitoring
• K2 Ultracool Dwarfs Survey II: The White Light Flare Rate of Young Brown Dwarfs
• Calibration of the MEarth Photometric System: Optical Magnitudes and Photometric Metallicity Estimates for 1802 Nearby M-dwarfs
• The Pan-STARRS1 Proper-motion Survey for Young Brown Dwarfs in Nearby Star-forming Regions. I. Taurus Discoveries and a Reddening-free Classification Method for Ultracool Dwarfs
• SDSS J141624.08+134826.7: Blue L Dwarfs and Non-Equilibrium Chemistry
• 2MASS 22344161+4041387AB: A Wide, Young, Accreting, Low-mass Binary in the LkHa233 Group
• A Search for L/T Transition Dwarfs With Pan-STARRS1 and WISE: Discovery of Seven Nearby Objects Including Two Candidate Spectroscopic Variables
• Two T dwarfs from the UKIDSS Early Data Release
• Tracing the tidal streams of the Sagittarius dSph, and halo Milky Way features, with carbon-rich long-period variables
• A Very High Proper Motion Star and the First L dwarf in the Kepler Field
• Detectability of Transiting Jupiters and Low-Mass Eclipsing Binaries in Sparsely Sampled Pan-STARRS-1 Survey Data
• Spectroscopic distances of nearby ultracool dwarfs
• The UKIDSS-2MASS Proper Motion Survey I: Ultracool dwarfs from UKIDSS DR4
• The ESO SupJup Survey I: Chemical and isotopic characterisation of the late L-dwarf DENIS J0255-4700 with CRIRES${}^{+}$
• The Second Arecibo Search for 5 GHz Radio Flares from Ultracool Dwarfs
• Steady and Transient Radio Emission from Ultracool Dwarfs
• Two new ultra-cool benchmark systems from WISE+2MASS
• Identifying Ultra-Cool Dwarfs at Low Galactic Latitudes: A Southern Candidate Catalogue
• Ultracool Dwarfs Observed with the Spitzer Infrared Spectrograph -- III. Dust Grains in Young L Dwarf Atmospheres Are Heavier
• Optical spectroscopy of high proper motion stars: new M dwarfs within 10 pc and the closest pair of subdwarfs
• Crossing into the substellar regime in Praesepe
• High Resolution Imaging of Very Low Mass Spectral Binaries: Three Resolved Systems and Detection of Orbital Motion in an L/T Transition Binary
• A Search for L/T Transition Dwarfs With Pan-STARRS1 and WISE. III. Young L Dwarf Discoveries and Proper Motion Catalogs in Taurus and Scorpius-Centaurus
• Discovery of Four High Proper Motion L Dwarfs, Including a 10 pc L Dwarf at the L/T Transition
• Planets Around Low-Mass Stars (PALMS). V. Age-Dating Low-Mass Companions to Members and Interlopers of Young Moving Groups
• A Reanalysis of the Fundamental Parameters and Age of TRAPPIST-1
• Optical and Near-Infrared Spectra of sigma Orionis Isolated Planetary-mass Objects
• Estimating the Ultraviolet Emission of M dwarfs with Exoplanets from Ca II and H$\alpha$
• Detection of new strongly variable brown dwarfs in the L/T transition
• WISEP J180026.60+013453.1: A Nearby Late L Dwarf Near the Galactic Plane
• The possiblity of detection of Ultracool Dwarfs with the UKIRT Infrared Deep Sky Survey
• Characterization of the Very Low Mass Secondary in the GJ 660.1AB System
• A new take on the low-mass brown dwarf companions on wide-orbits in Upper-Scorpius
• Activity of TRAPPIST-1 analogue stars observed with TESS
• A 1500 deg${}^2$ Near Infrared Proper Motion Catalogue from the UKIDSS Large Area Survey
• A Close Companion Search around L Dwarfs using Aperture Masking Interferometry and Palomar Laser Guide Star Adaptive Optics
• Parallaxes of five L Dwarfs with a Robotic Telescope
• Extremely faint high proper motion objects from SDSS stripe 82 - Optical classification spectroscopy of about 40 new objects
• Spectroscopy and kinematics of low-mass members of young moving groups
• $K2$ Ultracool Dwarfs Survey. VI. White light superflares observed on an L5 dwarf and flare rates of L dwarfs
• Multiwavelength study of the high-latitude cloud L1642: chain of star formation
• Discovery of a widely separated UCD-WD binary
• VLT X-shooter spectroscopy of the nearest brown dwarf binary
• Follow-up observations of binary ultra-cool dwarfs
• Hunting Galaxies to (and for) Extinction
• Resolved Spectroscopy of M Dwarf/L Dwarf Binaries. IV. Discovery of an M9 + L6 BInary Separated by Over 100 AU
• A Search for wide visual companions of exoplanet host stars - The Calar Alto Survey
• The ages of L dwarfs
• The Collapse of the Wien Tail in the Coldest Brown Dwarf? Hubble Space Telescope Near-Infrared Photometry of WISE J085510.83-071442.5
• Optical linear polarization in ultra cool dwarfs: A tool to probe dust in the ultra cool dwarf atmospheres
• A search for southern ultracool dwarfs in young moving groups
• LHS 1610A: A Nearby Mid-M Dwarf with a Companion That is Likely A Brown Dwarf
• Mesolensing Explorations of Nearby Masses: From Planets to Black Holes
• Discovery of a widely separated binary system of very low mass stars
• PSYM-WIDE: a survey for large-separation planetary-mass companions to late spectral type members of young moving groups
• Spectroscopic follow-up of L- and T-type proper-motion member candidates in the Pleiades
• The Cornell High-order Adaptive Optics Survey for Brown Dwarfs in Stellar Systems-II: Results from Monte Carlo Population Analyses
• Number Counts of Bright Extremely Red Objects: Evolved Massive Galaxies at z~1
• 2MASS J20261584-2943124: An Unresolved L0.5 + T6 Spectral Binary
• Calibrating Ultracool Dwarfs: Optical Template Spectra, Bolometric Corrections, and $\chi$ Values
• New nearby stars in the Liverpool-Edinburgh high proper motion survey selected by DENIS photometry
• Parallaxes of southern extremely cool objects III: 118 L \& T dwarfs
• Discovery of a nearby M9 dwarf
• Resolved Spectroscopy of M Dwarf/L Dwarf Binaries. III. The "Wide" L3.5/L4 Dwarf Binary 2MASS J15500845+1455180AB
• Ultracool dwarfs in Gaia DR3
• Parallaxes of Cool Objects with WISE: Filling in for Gaia
• Meeting the Cool Neighbours, VI: A search for nearby ultracool dwarfs in the Galactic Plane
• Measuring the Initial Mass Function of Low Mass Stars and Brown Dwarfs
• The ChaMPlane bright X-ray sources - Galactic longitudes l = 2-358 deg
• Radial Velocity Variability of Field Brown Dwarfs
• On the Correlation between L Dwarf Optical and Infrared Variability and Radio Aurorae
• Cool carbon stars in the halo: new very red or distant objects
• A Method for Selecting M dwarfs with an Increased Likelihood of Unresolved Ultra-cool Companionship
• Hunting for brown dwarf binaries and testing atmospheric models with X-Shooter
• New ultracool dwarf neighbours within 20pc from Gaia DR2
• Discovery of a nearby young brown dwarf binary candidate
• Astrometric orbits of spectral binary brown dwarfs I: Massive T dwarf companions to 2M1059$-$21 and 2M0805$+$48
• Optical Spectra of Ultracool Dwarfs with the Southern African Large Telescope
• An Age Constraint for the Very Low-Mass Stellar/Brown Dwarf Binary 2MASS J03202839-0446358AB
• DE0823$-$49 is a juvenile binary brown dwarf at 20.7 pc
• Deep search for companions to probable young brown dwarfs
• The SRG/eROSITA All-Sky Survey: X-ray beacons at late cosmic dawn
• New brown dwarf companions to dM(e) stars
• Correlated spectral variability in brown dwarfs
• Proper motions of field L and T dwarfs -II
• Cool carbon stars in the halo and in dwarf galaxies: Halpha, colours, and variabiity
• Detecting Variability in Massive Astronomical Time-Series Data II: Variable Candidates in the Northern Sky Variability Survey
• Probing TRAPPIST-1-like systems with K2
• Beyond the Local Volume. II. Population Scaleheights and Ages of Ultracool Dwarfs in Deep HST/WFC3 Parallel Fields
• The Occurrence Rate of Quiescent Radio Emission for Ultracool Dwarfs using a Generalized Semi-Analytical Bayesian Framework
• A Search for z=7.3 Lyα Emitters behind Gravitationally Lensing Clusters
• Spectral Variability of Two Rapidly Rotating Brown Dwarfs: 2MASS J08354256-0819237 and 2MASS J18212815+1414010
• The search for planetary mass companions to field brown dwarfs with HST/NICMOS
• A k-NN Method to Classify Rare Astronomical Sources: Photometric Search of Brown Dwarfs with Spitzer/IRAC
• BANYAN. X. Discovery of a wide, low-gravity L-type companion to a fast-rotating M3 dwarf
• Euclid Quick Data Release (Q1) -- Spectroscopic search, classification and analysis of ultracool dwarfs in the Deep Fields
• A deep wide-field optical survey in the young open cluster Collinder 359
• Dust emission, extinction, and scattering in LDN 1642
• L dwarfs detection from SDSS images using improved Faster R-CNN
• Indications of M-dwarf Deficits in the Halo and Thick Disk of the Galaxy
• COol Companions ON Ultrawide orbiTS (COCONUTS). III. A Very Red L6 Benchmark Brown Dwarf around a Young M5 Dwarf
• X-SHYNE: X-Shooter spectra of young exoplanet analogs II. Presentation and analysis of the full library
• Spectroscopy of Candidate Members of the Sco-Cen Complex
• Testing the existence of optical linear polarization in young brown dwarfs
• NICMOS Kernel-Phase Interferometry I: Catalogue of Brown Dwarfs Observed in F110W and F170M
• The magnetically-active, low-mass, triple system WDS 19312+3607
• A deep, wide-field search for substellar members in NGC 2264
• An L+T Spectral Binary with Possible AB Doradus Kinematics
• A search for planetary-mass objects and brown dwarfs in the Upper Scorpius association
• Low Mass Companions to White Dwarfs
• Large Scale Searches for Brown Dwarfs and Free-Floating Planets
• Maximum Reduced Proper Motion Method: Detection of New Nearby Ultracool Dwarfs
• The variable V381 Lac and its possible connection with the R CrB phenomenon
• Where to find over-massive brown dwarfs: new benchmark systems for binary evolution
• Oxygen rich cool stars in the Cepheus region, New observations. III
• The Brown Dwarf Kinematics Project (BDKP). V. Radial and Rotational Velocities of T Dwarfs from Keck/NIRSPEC High-Resolution Spectroscopy
• The Brown Dwarf Kinematics Project (BDKP). II. Details on Nine Wide Common Proper Motion Very Low-Mass Companions to Nearby Stars
• The Gaia Ultracool Dwarf Sample -- IV. GTC/OSIRIS optical spectra of Gaia late-M and L dwarfs
• Detection and characterisation of two VLM binaries: LP 1033-31 and LP 877-72
• SMC-Last Mosaic Images
• Infrared photometry of the dwarf nova V2051 Ophiuchi: I - The mass donor star and the distance
• On The Unusual Variability of 2MASS J06195260-2903592: A Long-Lived Disk around a Young Ultracool Dwarf
• Variable Red Giants Exploration with MASTER Robotic Net: Main Algorithms and Study of Three Mira-type Targets
• Disentangling auroral, cloud and magnetic spot driven variability in three early L-dwarfs with HST/WFC3
• New constraints on the minimum mass for thermonuclear lithium burning in brown dwarfs
• Silicate Clouds, SiO, and Molecular Trends across the L-T Sequence: A JWST/MIRI LRS Spectral Library of Brown Dwarfs
• Using Old and New Approaches: Determining Physical Properties of Brown Dwarfs with Empirical Relations and Machine Learning Models
• SpeX Spectroscopy of Unresolved Very Low-Mass Binaries. I. Identification of Seventeen Candidate Binaries Straddling the L Dwarf/T Dwarf Transition