WISEA J083011.95+283716.0: A Missing Link Planetary-mass Object

@article{Gagliuffi2020WISEAJA,
  title={WISEA J083011.95+283716.0: A Missing Link Planetary-mass Object},
  author={Daniella Bardalez Gagliuffi and Jacqueline K. Faherty and Adam C. Schneider and Aaron M. Meisner and Dan Caselden and G. Colin and Samuel J. Goodman and J. Davy Kirkpatrick and Marc J. Kuchner and Jonathan Gagn'e and Sarah E. Logsdon and Adam J. Burgasser and Katelyn Allers and John H. Debes and John P. Wisniewski and Austin Rothermich and Nikolaj Stevnbak Andersen and Melina Th'evenot and Jim Walla},
  journal={The Astrophysical Journal},
  year={2020}
}
We present the discovery of WISEA J083011.95+283716.0, the first Y dwarf candidate identified through the Backyard Worlds: Planet 9 citizen science project. We identified this object as a red, fast-moving source with a faint $W2$ detection in multi-epoch \textit{AllWISE} and unWISE images. We have characterized this object with Spitzer Space Telescope and \textit{Hubble Space Telescope} follow-up imaging. With mid-infrared detections in \textit{Spitzer}'s \emph{ch1} and \emph{ch2} bands and… 

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References

SHOWING 1-10 OF 87 REFERENCES
The Spectral Energy Distribution of the Coldest Known Brown Dwarf
WISE J085510.83-071442.5 (hereafter WISE 0855-0714) is the coldest known brown dwarf (~250 K) and the fourth closest known system to the Sun (2.2 pc). It has been previously detected only in the J
DISCOVERY OF A ∼250 K BROWN DWARF AT 2 pc FROM THE SUN*
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
WISE J072003.20-084651.2B is a Massive T Dwarf
We present individual dynamical masses for the nearby M9.5+T5.5 binary WISE J072003.20$-$084651.2AB, a.k.a. Scholz's star. Combining high-precision CFHT/WIRCam photocenter astrometry and Keck
The Closest Known Flyby of a Star to the Solar System
Passing stars can perturb the Oort Cloud, triggering comet showers and potentially extinction events on Earth. We combine velocity measurements for the recently discovered, nearby, low-mass binary
A New Parallax Measurement for the Coldest Known Brown Dwarf
WISE J085510.83-071442.5 was recently discovered as the coldest known brown dwarf based on four epochs of images from the Wide-field Infrared Survey Explorer and the Spitzer Space Telescope. We have
Wide Field Camera 3: science capabilities and plans for flight operation
Wide Field Camera 3 is the next generation of Hubble Space Telescope imaging instruments. Designed to complement and extend the existing capabilities of the HST, WFC3 will provide large increases in
Beyond the t dwarfs: theoretical spectra, colors, and detectability of the coolest brown dwarfs
We explore the spectral and atmospheric properties of brown dwarfs cooler than the latest known T dwarfs. Our focus is on the yet-to-be-discovered free-floating brown dwarfs in the Teff range from
Atmospheric Chemistry in Giant Planets, Brown Dwarfs, and Low-Mass Dwarf Stars. II. Sulfur and Phosphorus
Thermochemical equilibrium and kinetic calculations are used to model sulfur and phosphorus chemistry in giant planets, brown dwarfs, and extrasolar giant planets (EGPs). The chemical behavior of
Preliminary Trigonometric Parallaxes of 184 Late-T and Y Dwarfs and an Analysis of the Field Substellar Mass Function into the “Planetary” Mass Regime
We present preliminary trigonometric parallaxes of 184 late-T and Y dwarfs using observations from Spitzer (143), USNO (18), NTT (14), and UKIRT (9). To complete the 20-pc census of $\ge$T6 dwarfs,
...
1
2
3
4
5
...