Observed Variability at 1 and 4 μm in the Y0 Brown Dwarf WISEP J173835.52+273258.9

@article{Leggett2016ObservedVA,
  title={Observed Variability at 1 and 4 $\mu$m in the Y0 Brown Dwarf WISEP J173835.52+273258.9},
  author={S. K. Leggett and Michael C. Cushing and Kevin K. Hardegree-Ullman and Jesica L. Trucks and Mark S. Marley and Caroline V. Morley and Didier Saumon and Sean Carey and Jonathan J. Fortney and Christopher Ryan Gelino and John Gizis and J. Davy Kirkpatrick and Gregory N. Mace},
  journal={The Astrophysical Journal},
  year={2016},
  volume={830},
  pages={141}
}
We have monitored photometrically the Y0 brown dwarf WISEP J173835.52+273258.9 (W1738) at both near- and mid-infrared wavelengths. This ≾ 1 Gyr old 400 K dwarf is at a distance of 8 pc and has a mass around 5 M Jupiter. We observed W1738 using two near-infrared filters at λ ≈ 1 μm, Y and J, on Gemini Observatory and two mid-infrared filters at λ ≈ 4 μm, [3.6] and [4.5], on the Spitzer observatory. Twenty-four hours were spent on the source by Spitzer on each of 2013 June 30 and October 30 UT… Expand

Figures and Tables from this paper

Photometric Monitoring of the Coldest Known Brown Dwarf with the Spitzer Space Telescope
Because WISE J085510.83$-$071442.5 (hereafter WISE 0855-0714) is the coldest known brown dwarf ($\sim250$ K) and one of the Sun's closest neighbors (2.2 pc), it offers a unique opportunity forExpand
Parallaxes and Infrared Photometry of three Y0 dwarfs
We have followed up the three Y0 dwarfs WISEPA J041022.71+150248.5, WISEPA J173835.53+273258.9 and WISEPC J205628.90+145953.3 using the United Kingdom Infrared Telescope Wide Field Camera. We findExpand
Spitzer Light Curves of the Young, Planetary-Mass TW Hya Members 2MASS J11193254-1137466AB and WISEA J114724.10-204021.3
We present Spitzer Space Telescope time-series photometry at 3.6 and 4.5 $\mu$m of 2MASS J11193254$-$1137466AB and WISEA J114724.10$-$204021.3, two planetary-mass, late-type ($\sim$L7) brown dwarfExpand
The Y-Type Brown Dwarfs: Estimates of Mass and Age from New Astrometry, Homogenized Photometry and Near-Infrared Spectroscopy
The survey of the mid-infrared sky by the Wide-field Infrared Survey Explorer (WISE) led to the discovery of extremely cold low-mass brown dwarfs, classified as Y dwarfs, which extend the T class toExpand
Constraints on magnetospheric radio emission from Y dwarfs
As a pilot study of magnetism in Y dwarfs, we have observed the three known infrared variable Y dwarfs WISE J085510.83−071442.5, WISE J140518.40+553421.4, and WISEP J173835.53+273258.9 with theExpand
Y Dwarf Trigonometric Parallaxes from the Spitzer Space Telescope
Y dwarfs provide a unique opportunity to study free-floating objects with masses $<$30 M$_{Jup}$ and atmospheric temperatures approaching those of known Jupiter-like exoplanets. Obtaining distancesExpand
Detection of new strongly variable brown dwarfs in the L/T transition
Context. Brown dwarfs in the spectral range L9–T3.5, within the so called L/T transition, have been shown to be variable at higher amplitudes and with greater frequency than other field dwarfs. ThisExpand
Probing Late-type T dwarf J-H Color Outliers for Signs of Age
We present the results of a Keck/NIRSPEC follow-up survey of thirteen late-type T dwarfs (T6-T9), twelve of which have unusually red or blue J-H colors. Previous work suggests that J-H color outliersExpand
The Viewing Geometry of Brown Dwarfs Influences Their Observed Colors and Variability Amplitudes
In this paper we study the full sample of known Spitzer [$3.6~\mu$m] and $J$-band variable brown dwarfs. We calculate the rotational velocities, $v\sin i$, of 16 variable brown dwarfs using archivalExpand
Cloud Atlas: Rotational Spectral Modulations and Potential Sulfide Clouds in the Planetary-mass, Late T-type Companion Ross 458C
Measurements of photometric variability at different wavelengths provide insights into the vertical cloud structure of brown dwarfs and planetary-mass objects. In seven Hubble Space TelescopeExpand
...
1
2
3
...

References

SHOWING 1-10 OF 47 REFERENCES
THE FIRST DETECTION OF PHOTOMETRIC VARIABILITY IN A Y DWARF: WISE J140518.39+553421.3
We present the first detection of the photometric variability in a spectroscopically confirmed Y dwarf. The Infrared Array Camera on board the Spitzer Space Telescope was used to obtain time seriesExpand
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 combiningExpand
Photometric Variability of the T2.5 Brown Dwarf SIMP J013656.5+093347: Evidence for Evolving Weather Patterns
We report the discovery of a photometric variability in the bright T2.5 brown dwarf (BD) SIMP J013656.57+093347.3. Continuous J-band photometry has been obtained for several hours on four differentExpand
Photometric Variability at the L/T Dwarf Boundary
We have monitored the photometric variability of nine field L and T brown dwarfs for 10 nights during the course of 1 month. Observations were obtained in the K_s band with the Palomar 60 inch (1.5Expand
Weather on Other Worlds. III. A Survey for T Dwarfs with High Amplitude Optical Variability
We have monitored twelve T dwarfs with the Kitt Peak 2.1m telescope using an f814w filter (0.7-0.95 microns) to place in context the remarkable 10-20% variability exhibited by the nearby T dwarfExpand
WISE J163940.83-684738.6: A Y DWARF IDENTIFIED BY METHANE IMAGING
We have used methane imaging techniques to identify the near-infrared counterpart of the bright Wide-field Infrared Survey Explorer (WISE) source WISE J163940.83–684738.6. The large proper motion ofExpand
The Discovery of Y Dwarfs using Data from the Wide-field Infrared Survey Explorer (WISE)
We present the discovery of seven ultracool brown dwarfs identified with the Wide-field Infrared Survey Explorer (WISE). Near-infrared spectroscopy reveals deep absorption bands of H_(2)O and CH_4Expand
The brown dwarf atmosphere monitoring (BAM) project - I. The largest near-IR monitoring survey of L and T dwarfs
Using SofI on the 3.5m New Technology Telescope, we have conducted an extensive near-infrared monitoring survey of an unbiased sample of 69 brown dwarfs spanning the L0 and T8 spectral range, with atExpand
Near-Infrared Spectroscopy of the Y0 WISEP J173835.52+273258.9 and the Y1 WISE J035000.32-565830.2: the Importance of Non-Equilibrium Chemistry
We present new near-infrared spectra, obtained at Gemini Observatory, for two Y dwarfs: WISE J035000.32-565830.2 (W0350) and WISEP J173835.52+273258.9 (W1738). A FLAMINGOS-2 R=540 spectrum wasExpand
A COMPARISON OF NEAR-INFRARED PHOTOMETRY AND SPECTRA FOR Y DWARFS WITH A NEW GENERATION OF COOL CLOUDY MODELS
We present YJHK photometry, or a subset, for the six Y dwarfs discovered in Wide-field Infrared Survey Explorer (WISE) data by Cushing et al. The data were obtained using the Near-Infrared Imager onExpand
...
1
2
3
4
5
...