List of works - Sandy Leggett

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

47 new T dwarfs from the UKIDSS Large Area Survey

scientific article

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

scientific article

A Survey of z > 5.8 Quasars in the Sloan Digital Sky Survey. I. Discovery of Three New Quasars and the Spatial Density of Luminous Quasars at z ∼ 6

scientific article published in Astronomical Journal

A comparison of near-infrared photometry and spectra for y dwarfs with a new generation of cool cloudy models ⬇️

scientific article published in the Astrophysical Journal

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

scientific article

A detailed model atmosphere analysis of cool white dwarfs in the Sloan Digital Sky Survey

scientific article

A very cool brown dwarf in UKIDSS DR1

scholarly article

Ammonia as a Tracer of Chemical Equilibrium in the T7.5 Dwarf Gliese 570D ⬇️

scientific article published in the Astrophysical Journal

Blue not brown: UKIRT Infrared Deep Sky Survey T dwarfs with suppressed K-band flux

article by D. N. Murray et al published 21 March 2011 in Monthly Notices of the Royal Astronomical Society

Discovery of a highly unequal-mass binary T dwarf with Keck laser guide star adaptive optics: a coevality test of substellar theoretical models and effective temperatures ⬇️

scientific article published in the Astrophysical Journal

Discovery of a low-luminosity, tight substellar binary at the T/Y transition ⬇️

scientific article published in the Astrophysical Journal

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

scholarly article

Discovery of the benchmark metal-poor T8 dwarf BD +01° 2920B

scholarly article

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

scientific article published on 6 June 2023

Eight new T4.5-T7.5 dwarfs discovered in the UKIDSS Large Area Survey Data Release 1

scholarly article

Exploring the substellar temperature regime down to ∼550 K

scientific article

Fifteen new T dwarfs discovered in the UKIDSS Large Area Survey

scholarly article

Infrared Spectra of Low-Mass Stars: Toward a Temperature Scale for Red Dwarfs

scholarly article

JHK standard stars for large telescopes: the UKIRT Fundamental and Extended lists

scholarly article

Kelu‐1 Is a Binary L Dwarf: First Brown Dwarf Science from Laser Guide Star Adaptive Optics ⬇️

Measuring and Replicating the 1-20 μm Energy Distributions of the Coldest Brown Dwarfs: Rotating, Turbulent, and Nonadiabatic Atmospheres

scientific article published in September 2021

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

scholarly article

Mid-infrared photometry of cold brown dwarfs: diversity in age, mass, and metallicity ⬇️

scientific article published in the Astrophysical Journal

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

scientific article

Near-Infrared Photometry and Spectroscopy of L and T Dwarfs: The Effects of Temperature, Clouds, and Gravity

scientific article published in Astronomical Journal

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

scientific article published in the Astrophysical Journal

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 ⬇️

scientific article published in the Astrophysical Journal

Neglected clouds in T and Y dwarf atmospheres

scientific article published in the Astrophysical Journal

Observed variability at 1 and 4 {mu}m in the Y0 brown dwarf WISEP J173835.52+273258.9 ⬇️

scientific article published in the Astrophysical Journal

On the Nature of Ultracool White Dwarfs: Not so Cool after All

On the nature of the circumstellar medium of the remarkable Type Ia/IIn supernova SN 2002ic

scientific article published in October 2004

Parallaxes and physical properties of 11 mid-to-late T dwarfs

scientific article published in Astronomy and Astrophysics

Properties of the T8.5 dwarf Wolf 940 b ⬇️

scientific article published in the Astrophysical Journal

Resolved spectroscopy of the T8.5 and Y0-0.5 binary WISEPC J121756.91+162640.2AB ⬇️

scientific article published in the Astrophysical Journal

Seventy-One New L and T Dwarfs from the Sloan Digital Sky Survey

scientific article published in Astronomical Journal

The Chemical Evolution of Cool White Dwarfs and the Age of the Local Galactic Disk

article by Pierre Bergeron et al published January 1997 in The Astrophysical Journal Supplement Series

The Cool White Dwarf Luminosity Function and the Age of the Galactic Disk ⬇️

scientific article published in the Astrophysical Journal

The UKIRT Infrared Deep Sky Survey Early Data Release

scholarly article

The United Kingdom Infrared Telescope Infrared Deep Sky Survey First Data Release

scholarly article by S. J. Warren published in February 2007

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

scientific article in the Astrophysical Journal published in June 2017

The discovery of a very cool binary system

scientific article

The discovery of a very cool, very nearby brown dwarf in the Galactic plane

article

The discovery of the T8.5 dwarf UGPS J0521+3640

scientific article

The mass-luminosity relation in the L/T transition: individual dynamical masses for the new J-band flux reversal binary SDSSJ105213.51+442255.7AB ⬇️

scientific article published in the Astrophysical Journal

The missing link: early methane ("T") dwarfs in the Sloan Digital Sky Survey

scientific article published in January 2000

The physical properties of four ~600 K T dwarfs ⬇️

scientific article published in the Astrophysical Journal

The properties of the 500 K dwarf UGPS J072227.51-054031.2 and a study of the far-red flux of cold brown dwarfs ⬇️

scientific article published in the Astrophysical Journal

The properties of the T8.5p dwarf Ross 458C

scholarly article

Toward Spectral Classification of L and T Dwarfs: Infrared and Optical Spectroscopy and Analysis ⬇️

scholarly article

Trigonometric Parallaxes of Central Stars of Planetary Nebulae

scientific article published in Astronomical Journal

Two T dwarfs from the UKIDSS early data release

scientific article published in Astronomy and Astrophysics

Untangling the near-IR spectral features in the protoplanetary environment of KH 15D ⬇️

scientific article published in the Astrophysical Journal

List of works by Sandy Leggett

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

47 new T dwarfs from the UKIDSS Large Area Survey

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

A Survey of z > 5.8 Quasars in the Sloan Digital Sky Survey. I. Discovery of Three New Quasars and the Spatial Density of Luminous Quasars at z ∼ 6

A comparison of near-infrared photometry and spectra for y dwarfs with a new generation of cool cloudy models ⬇️

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

A detailed model atmosphere analysis of cool white dwarfs in the Sloan Digital Sky Survey

A very cool brown dwarf in UKIDSS DR1

Ammonia as a Tracer of Chemical Equilibrium in the T7.5 Dwarf Gliese 570D ⬇️

Blue not brown: UKIRT Infrared Deep Sky Survey T dwarfs with suppressed K-band flux

Discovery of a highly unequal-mass binary T dwarf with Keck laser guide star adaptive optics: a coevality test of substellar theoretical models and effective temperatures ⬇️

Discovery of a low-luminosity, tight substellar binary at the T/Y transition ⬇️

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

Discovery of the benchmark metal-poor T8 dwarf BD +01° 2920B

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

Eight new T4.5-T7.5 dwarfs discovered in the UKIDSS Large Area Survey Data Release 1

Exploring the substellar temperature regime down to ∼550 K

Fifteen new T dwarfs discovered in the UKIDSS Large Area Survey

Infrared Spectra of Low-Mass Stars: Toward a Temperature Scale for Red Dwarfs

JHK standard stars for large telescopes: the UKIRT Fundamental and Extended lists

Kelu‐1 Is a Binary L Dwarf: First Brown Dwarf Science from Laser Guide Star Adaptive Optics ⬇️

Measuring and Replicating the 1-20 μm Energy Distributions of the Coldest Brown Dwarfs: Rotating, Turbulent, and Nonadiabatic Atmospheres

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

Mid-infrared photometry of cold brown dwarfs: diversity in age, mass, and metallicity ⬇️

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

Near-Infrared Photometry and Spectroscopy of L and T Dwarfs: The Effects of Temperature, Clouds, and Gravity

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

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 ⬇️

Neglected clouds in T and Y dwarf atmospheres

Observed variability at 1 and 4 {mu}m in the Y0 brown dwarf WISEP J173835.52+273258.9 ⬇️

On the Nature of Ultracool White Dwarfs: Not so Cool after All

On the nature of the circumstellar medium of the remarkable Type Ia/IIn supernova SN 2002ic

Parallaxes and physical properties of 11 mid-to-late T dwarfs

Properties of the T8.5 dwarf Wolf 940 b ⬇️

Resolved spectroscopy of the T8.5 and Y0-0.5 binary WISEPC J121756.91+162640.2AB ⬇️

Seventy-One New L and T Dwarfs from the Sloan Digital Sky Survey

The Chemical Evolution of Cool White Dwarfs and the Age of the Local Galactic Disk

The Cool White Dwarf Luminosity Function and the Age of the Galactic Disk ⬇️

The UKIRT Infrared Deep Sky Survey Early Data Release

The United Kingdom Infrared Telescope Infrared Deep Sky Survey First Data Release

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

The discovery of a very cool binary system

The discovery of a very cool, very nearby brown dwarf in the Galactic plane

The discovery of the T8.5 dwarf UGPS J0521+3640

The mass-luminosity relation in the L/T transition: individual dynamical masses for the new J-band flux reversal binary SDSSJ105213.51+442255.7AB ⬇️

The missing link: early methane ("T") dwarfs in the Sloan Digital Sky Survey

The physical properties of four ~600 K T dwarfs ⬇️

The properties of the 500 K dwarf UGPS J072227.51-054031.2 and a study of the far-red flux of cold brown dwarfs ⬇️

The properties of the T8.5p dwarf Ross 458C

Toward Spectral Classification of L and T Dwarfs: Infrared and Optical Spectroscopy and Analysis ⬇️

Trigonometric Parallaxes of Central Stars of Planetary Nebulae

Two T dwarfs from the UKIDSS early data release

Untangling the near-IR spectral features in the protoplanetary environment of KH 15D ⬇️