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 …
A Volume-limited Sample of Ultracool Dwarfs. I. Construction, Space Density, and a Gap in the L/T Transition
WMJ Best, MC Liu, EA Magnier… - The Astronomical …, 2020 - iopscience.iop.org
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 …
parallaxes, using our recent measurements from UKIRT/WFCAM along with Gaia DR2 and …
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 …
Rotation Periods, Inclinations, and Obliquities of Cool Stars Hosting Directly Imaged Substellar Companions: Spin–Orbit Misalignments Are Common
The orientation between a star's spin axis and a planet's orbital plane provides valuable
information about the system's formation and dynamical history. For non-transiting planets at …
information about the system's formation and dynamical history. For non-transiting planets at …
The Hawaii Infrared Parallax Program. VI. The Fundamental Properties of 1000+ Ultracool Dwarfs and Planetary-mass Objects Using Optical to Mid-infrared Spectral …
We derive the bolometric luminosities (L bol) of 865 field-age and 189 young ultracool
dwarfs (spectral types M6–T9, including 40 new discoveries presented here) by directly …
dwarfs (spectral types M6–T9, including 40 new discoveries presented here) by directly …
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 …
Self-consistent models of Y dwarf atmospheres with water clouds and disequilibrium chemistry
B Lacy, A Burrows - The Astrophysical Journal, 2023 - iopscience.iop.org
Y dwarfs are the coolest spectral class of brown dwarf. They have effective temperatures
less than 500 K, with the coolest detection as low as∼ 250 K. They make up the low-mass …
less than 500 K, with the coolest detection as low as∼ 250 K. They make up the low-mass …
Gaia Data Release 3-A golden sample of astrophysical parameters
OL Creevey, LM Sarro, A Lobel, E Pancino… - Astronomy & …, 2023 - aanda.org
Context. Gaia Data Release 3 (DR3) provides a wealth of new data products for the
astronomical community to exploit, including astrophysical parameters for half a billion stars …
astronomical community to exploit, including astrophysical parameters for half a billion stars …
An atmospheric retrieval of the brown dwarf Gliese 229B
E Calamari, JK Faherty, B Burningham… - The Astrophysical …, 2022 - iopscience.iop.org
We present results from an atmospheric retrieval analysis of Gl 229B using the Brewster
retrieval code. We find the best fit model to be cloud-free, consistent with the T dwarf retrieval …
retrieval code. We find the best fit model to be cloud-free, consistent with the T dwarf retrieval …