DISCOVERY OF A ∼250 K BROWN DWARF AT 2 pc FROM THE SUN

@article{Luhman2014DISCOVERYOA,
  title={DISCOVERY OF A ∼250 K BROWN DWARF AT 2 pc FROM THE SUN},
  author={Kevin L. Luhman},
  journal={The Astrophysical Journal Letters},
  year={2014},
  volume={786}
}
  • K. Luhman
  • Published 21 April 2014
  • Physics, Geology
  • The Astrophysical Journal Letters
Through a previous analysis of multi-epoch astrometry from the Wide-field Infrared Survey Explorer (WISE), I identified WISE J085510.83−071442.5 as a new high proper motion object. By combining astrometry from WISE and the Spitzer Space Telescope, I have measured a proper motion of 8.1 ± 0.1″ yr−1 and a parallax of 0.454 ± 0.045″ ( pc) for WISE J085510.83−071442.5, giving it the third highest proper motion and the fourth largest parallax of any known star or brown dwarf. It is also the coldest… 

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References

SHOWING 1-10 OF 47 REFERENCES
DISCOVERY OF A BINARY BROWN DWARF AT 2 pc FROM THE SUN
I am using multi-epoch astrometry from the Wide-field Infrared Survey Explorer (WISE) to search for new members of the solar neighborhood via their high proper motions. Through this work, I have
Confirmation of One of the Coldest Known Brown Dwarfs
Using two epochs of 4.5 μm images from the Infrared Array Camera (IRAC) on board the Spitzer Space Telescope, we recently identified a common proper motion companion to the white dwarf WD 0806-661
Discovery of the Y1 Dwarf WISE J064723.23-623235.5
We present the discovery of a very cold, very low mass, nearby brown dwarf using data from the NASA Wide-field Infrared Survey Explorer (WISE). The object, WISE J064723.23−623235.5, has a very red
THE COLDEST BROWN DWARF (OR FREE-FLOATING PLANET)?: THE Y DWARF WISE 1828+2650
We have monitored the position of the cool Y dwarf WISEPA J182831.08+265037.8 using a combination of ground- and space-based telescopes and have determined its distance to be 11.2+1.3−1.0 pc. Its
A SEARCH FOR HIGH PROPER MOTION T DWARFS WITH Pan-STARRS1 + 2MASS + WISE
We have searched ≈8200 deg2 for high proper motion (≈0.″5–2.″7 year−1) T dwarfs by combining first-epoch data from the Pan-STARRS1 (PS1) 3π Survey, the Two Micron All Sky Survey (2MASS) All-Sky Point
The 2MASS Wide-Field T Dwarf Search. III. Seven New T Dwarfs and Other Cool Dwarf Discoveries
We present the discovery of seven new T dwarfs identified in the Two Micron All Sky Survey. Low-resolution (R ∼ 150) 0.8–2.5 μm spectroscopy obtained with the Infrared Telescope Facility (IRTF) SpeX
Possible astrometric discovery of a substellar companion to the closest binary brown dwarf system WISE J104915.57–531906.1
Using FORS2 on the Very Large Telescope, we have astrometrically monitored over a period of two months the two components of the brown dwarf system WISE J104915.57-531906.1, the closest one to the
A VERY HIGH PROPER MOTION STAR AND THE FIRST L DWARF IN THE KEPLER FIELD
We report two nearby high proper motion dwarfs of special interest identified using the Preliminary Data Release of the Wide-field Infrared Survey Explorer (WISE) and the Two Micron All Sky Survey.
HUBBLE SPACE TELESCOPE SPECTROSCOPY OF BROWN DWARFS DISCOVERED WITH THE WIDE-FIELD INFRARED SURVEY EXPLORER
We present a sample of brown dwarfs identified with the Wide-field Infrared Survey Explorer (WISE) for which we have obtained Hubble Space Telescope (HST) Wide Field Camera 3 (WFC3) near-infrared
A SEARCH FOR A DISTANT COMPANION TO THE SUN WITH THE WIDE-FIELD INFRARED SURVEY EXPLORER
I have used multi-epoch astrometry from the Wide-field Infrared Survey Explorer to perform a search for a distant companion to the Sun via its parallactic motion. I have not found an object of this
...
...