A survey of stellar families: multiplicity of solar-type stars
D Raghavan, HA McAlister, TJ Henry… - The Astrophysical …, 2010 - iopscience.iop.org
We present the results of a comprehensive assessment of companions to solar-type stars. A
sample of 454 stars, including the Sun, was selected from the Hipparcos catalog with π> 40 …
sample of 454 stars, including the Sun, was selected from the Hipparcos catalog with π> 40 …
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 …
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 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 …
Results from The COPAINS Pilot Survey: four new BDs and a high companion detection rate for accelerating stars
The last decade of direct imaging (DI) searches for sub-stellar companions has uncovered a
widely diverse sample that challenges the current formation models, while highlighting the …
widely diverse sample that challenges the current formation models, while highlighting the …
Astrometry and photometry for cool dwarfs and brown dwarfs
CC Dahn, HC Harris, FJ Vrba, HH Guetter… - The Astronomical …, 2002 - iopscience.iop.org
Trigonometric parallax determinations are presented for 28 late-type dwarfs and brown
dwarfs, including eight M dwarfs with spectral types between M7 and M9. 5, 17 L dwarfs with …
dwarfs, including eight M dwarfs with spectral types between M7 and M9. 5, 17 L dwarfs with …
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 …
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 …
Binarity in Brown dwarfs: T dwarf binaries discovered with the hubble space telescope wide field planetary camera 2
AJ Burgasser, JD Kirkpatrick, IN Reid… - The Astrophysical …, 2003 - iopscience.iop.org
We present the discovery of two T dwarf binaries, 2MASS 1225-2739AB and 2MASS 1534-
2952AB, identified in a sample of 10 T dwarfs imaged with the Hubble Space Telescope …
2952AB, identified in a sample of 10 T dwarfs imaged with the Hubble Space Telescope …
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 …