Articles by S. K. Leggett

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S. K. Leggett

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Redshifting the Study of Cold Brown Dwarfs and Exoplanets: the Mid-Infrared Wavelength Region as an Indicator of Surface Gravity and Mass

3 January 2025 by S. Leggett and Pascal Tremblin

Solar and Stellar Astrophysics, Earth and Planetary Astrophysics

The First Y Dwarf Data From JWST Show That Dynamic and Diabatic Processes Regulate Cold Brown Dwarf Atmospheres

25 September 2023 by S. Leggett and Pascal Tremblin

Solar and Stellar Astrophysics, Earth and Planetary Astrophysics

Disk or Companion: Characterizing Excess Infrared Flux in Seven White Dwarf Systems with Near-Infrared Spectroscopy

28 March 2023 by Dylan Owens and others

Solar and Stellar Astrophysics, Earth and Planetary Astrophysics

Exploring the Extremes: Characterizing a New Population of Old and Cold Brown Dwarfs

24 January 2023 by A. Meisner and others

Solar and Stellar Astrophysics, Earth and Planetary Astrophysics

On the Nature of Ultracool White Dwarfs: Not so Cool Afterall

7 June 2022 by Piere Bergeron and others

Solar and Stellar Astrophysics

Infrared Excesses around Bright White Dwarfs from Gaia and unWISE. II

27 October 2021 by Samuel Lai and others

Solar and Stellar Astrophysics, Earth and Planetary Astrophysics

Gemini/GMOS Transmission Spectroscopy of the Grazing Planet Candidate WD 1856+534 b

27 October 2021 by Siyi Xu and others

Earth and Planetary Astrophysics, Solar and Stellar Astrophysics

Measuring and Replicating the 1-20 um Energy Distributions of the Coldest Brown Dwarfs: Rotating, Turbulent and Non-Adiabatic Atmospheres

1 July 2021 by S. Leggett and others

Solar and Stellar Astrophysics, Earth and Planetary Astrophysics

Faint Standards for ZYJHK from the UKIDSS and VISTA Surveys

29 January 2020 by S. Leggett and others

Instrumentation and Methods for Astrophysics, Astrophysics of Galaxies

3.8um Imaging of 400-600K Brown Dwarfs and Orbital Constraints for WISEP J045853.90+643452.6AB

21 August 2019 by S. Leggett and others

Solar and Stellar Astrophysics, Earth and Planetary Astrophysics

Distant White Dwarfs in the US Naval Observatory Flagstaff Station Parallax Sample

28 September 2018 by S. Leggett and others

Solar and Stellar Astrophysics

CCD Parallaxes for 309 Late-type Dwarfs and Subdwarfs

8 September 2017 by Conard Dahn and others at

Gemini Observatory

Solar and Stellar Astrophysics

The Y-Type Brown Dwarfs: Estimates of Mass and Age from New Astrometry, Homogenized Photometry and Near-Infrared Spectroscopy

12 April 2017 by S. Leggett and others

Solar and Stellar Astrophysics, Astrophysics of Galaxies

Parallaxes and Infrared Photometry of three Y0 dwarfs

30 March 2017 by R. Smart and others

Solar and Stellar Astrophysics

Untangling the Near-IR Spectral Features in the Protoplanetary Environment of KH 15D

28 November 2016 by Nicole Arulanantham and others

Earth and Planetary Astrophysics, Solar and Stellar Astrophysics

Observed Variability at 1um and 4um in the Y0 Brown Dwarf WISEP J173835.52+273258.9

26 July 2016 by S. Leggett and others

Solar and Stellar Astrophysics

Near-Infrared Spectroscopy of the Y0 WISEP J173835.52+273258.9 and the Y1 WISE J035000.32-565830.2: the Importance of Non-Equilibrium Chemistry

30 March 2016 by S. Leggett and others

Solar and Stellar Astrophysics

The Mass-Luminosity Relation in the L/T Transition: Individual Dynamical Masses for the New J-Band Flux Reversal Binary SDSSJ105213.51+442255.7AB

20 March 2015 by Trent Dupuy and others

Solar and Stellar Astrophysics, Earth and Planetary Astrophysics

Methane and Ammonia in the near-infrared spectra of late T dwarfs

16 March 2015 by J. Canty and others

Solar and Stellar Astrophysics

Discovery of a Low-Luminosity, Tight Substellar Binary at the T/Y Transition

16 February 2015 by Trent Dupuy and others

Solar and Stellar Astrophysics

Near-infrared photometry of Y dwarfs: low ammonia abundance and the onset of water clouds

15 November 2014 by S. Leggett and others

Solar and Stellar Astrophysics

Discovery of a new Y dwarf: WISE J030449.03-270508.3

1 August 2014 by D. Pinfield and others

Solar and Stellar Astrophysics

White Dwarfs In The UKIRT Infrared Deep Sky Survey Data Release 9

1 May 2014 by Pier-Emmanuel Tremblay and others

Solar and Stellar Astrophysics

Resolved Spectroscopy of the T8.5 and Y0-0.5 Binary WISEPC J121756.91+162640.2AB

8 November 2013 by S. Leggett and others

Solar and Stellar Astrophysics

A deep WISE search for very late type objects and the discovery of two halo/thick-disk T dwarfs: WISE 0013+0634 and WISE 0833+0052

2 August 2013 by D. Pinfield and others

Astrophysics of Galaxies, Solar and Stellar Astrophysics

NPARSEC: NTT Parallaxes of Southern Extremely Cool objects. Goals, targets, procedures and first results

19 June 2013 by R. Smart and others

Solar and Stellar Astrophysics, Instrumentation and Methods for Astrophysics

Seventy six T dwarfs from the UKIDSS LAS: benchmarks, kinematics and an updated space density

9 May 2013 by Ben Burningham and others

Solar and Stellar Astrophysics, Earth and Planetary Astrophysics

A Comparison of Near-Infrared Photometry and Spectra for Y Dwarfs with a New Generation of Cool Cloudy Models

8 December 2012 by S. Leggett and others

Solar and Stellar Astrophysics

The Frequency of Debris Disks at White Dwarfs

14 September 2012 by Sara Barber and others

Astrophysics of Galaxies, Solar and Stellar Astrophysics

Two Extraordinary Substellar Binaries at the T/Y Transition and the Y-Band Fluxes of the Coolest Brown Dwarfs

29 August 2012 by Michael Liu and others at

Gemini

Solar and Stellar Astrophysics

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Solar and Stellar Astrophysics Earth and Planetary Astrophysics Astrophysics of Galaxies Instrumentation and Methods for Astrophysics