New spectral types L and T
JD Kirkpatrick - Annu. Rev. Astron. Astrophys., 2005 - annualreviews.org
▪ Abstract The establishment of new spectral classes cooler than type M has had a brief, yet
already rich, history. Prototypes of the new “L dwarf” and “T dwarf” classes were first found in …
already rich, history. Prototypes of the new “L dwarf” and “T dwarf” classes were first found in …
The field substellar mass function based on the full-sky 20 pc census of 525 L, T, and Y dwarfs
JD Kirkpatrick, CR Gelino, JK Faherty… - The Astrophysical …, 2021 - iopscience.iop.org
We present final Spitzer trigonometric parallaxes for 361 L, T, and Y dwarfs. We combine
these with prior studies to build a list of 525 known L, T, and Y dwarfs within 20 pc of the …
these with prior studies to build a list of 525 known L, T, and Y dwarfs within 20 pc of the …
The Hawaii infrared parallax program. I. Ultracool binaries and the L/T transition
We present the first results from our high-precision infrared (IR) astrometry program at the
Canada–France–Hawaii Telescope. We measure parallaxes for 83 ultracool dwarfs …
Canada–France–Hawaii Telescope. We measure parallaxes for 83 ultracool dwarfs …
Individual Dynamical Masses of Ultracool Dwarfs
We present the full results of our decade-long astrometric monitoring programs targeting 31
ultracool binaries with component spectral types M7–T5. Joint analysis of resolved imaging …
ultracool binaries with component spectral types M7–T5. Joint analysis of resolved imaging …
BANYAN. VII. A new population of young substellar candidate members of nearby moving groups from the BASS survey
We present the results of a near-infrared (NIR) spectroscopic follow-up survey of 182 M4–L7
low-mass stars and brown dwarfs (BDs) from the BANYAN All-Sky Survey (BASS) for …
low-mass stars and brown dwarfs (BDs) from the BANYAN All-Sky Survey (BASS) for …
Preliminary trigonometric parallaxes of 184 late-T and Y dwarfs and an analysis of the field substellar mass function into the “planetary” mass regime
JD Kirkpatrick, EC Martin, RL Smart… - The Astrophysical …, 2019 - iopscience.iop.org
We present preliminary trigonometric parallaxes of 184 late-T and Y dwarfs using
observations from Spitzer (143), the US Naval Observatory (18), the New Technology …
observations from Spitzer (143), the US Naval Observatory (18), the New Technology …
The AstraLux large M-dwarf multiplicity survey
M Janson, F Hormuth, C Bergfors… - The Astrophysical …, 2012 - iopscience.iop.org
We present the results of an extensive high-resolution imaging survey of M-dwarf multiplicity
using the Lucky Imaging technique. The survey made use of the AstraLux Norte camera at …
using the Lucky Imaging technique. The survey made use of the AstraLux Norte camera at …
The Initial Mass Function Based on the Full-sky 20 pc Census of∼ 3600 Stars and Brown Dwarfs
JD Kirkpatrick, F Marocco, CR Gelino… - The Astrophysical …, 2024 - iopscience.iop.org
A complete accounting of nearby objects—from the highest-mass white dwarf progenitors
down to low-mass brown dwarfs—is now possible, thanks to an almost complete set of …
down to low-mass brown dwarfs—is now possible, thanks to an almost complete set of …
Astrometry and Photometry for≈ 1000 L, T, and Y Dwarfs from the UKIRT Hemisphere Survey
AC Schneider, JA Munn, FJ Vrba… - The Astronomical …, 2023 - iopscience.iop.org
We present the positions, proper motions, and near-infrared photometry for 966 known
objects with spectral types later than M that were observed as part of the the UKIRT …
objects with spectral types later than M that were observed as part of the the UKIRT …
The NIRSPEC ultracool dwarf radial velocity survey
We report the results of an infrared Doppler survey designed to detect brown dwarf and giant
planetary companions to a magnitude-limited sample of ultracool dwarfs. Using the …
planetary companions to a magnitude-limited sample of ultracool dwarfs. Using the …