Discovery of the Young L Dwarf WISE J174102.78–464225.5

@article{Schneider2014DiscoveryOT,
  title={Discovery of the Young L Dwarf WISE J174102.78–464225.5},
  author={Adam C. Schneider and Michael C. Cushing and J. Davy Kirkpatrick and Gregory N. Mace and Christopher Ryan Gelino and Jacqueline K. Faherty and Sergio B. Fajardo-Acosta and Scott S. Sheppard},
  journal={The Astronomical Journal},
  year={2014},
  volume={147},
  pages={34}
}
We report the discovery of the L dwarf WISE J174102.78–464225.5, which was discovered as part of a search for nearby L dwarfs using the Wide-field Infrared Survey Explorer (WISE). The distinct triangular peak of the H-band portion of its near-infrared spectrum and its red near-infrared colors (J – K_S = 2.35 ± 0.08 mag) are indicative of a young age. Via comparison to spectral standards and other red L dwarfs, we estimate a near-infrared spectral type of L7 ± 2 (pec). From a comparison to… 
WISEA J064750.85-154616.4: a new nearby L/T transition dwarf
Aims: Our aim is to detect and classify previously overlooked brown dwarfs in the solar neighbourhood. Methods: We performed a proper motion search among bright sources observed with the Wide-field
A Statistical Survey of Peculiar L and T Dwarfs in SDSS, 2MASS, and WISE
We present the final results from a targeted search for brown dwarfs with unusual near-infrared colors. From a positional cross-match of SDSS, 2MASS and WISE, we have identified 144 candidate
THE HAWAII INFRARED PARALLAX PROGRAM. II. YOUNG ULTRACOOL FIELD DWARFS
(Abridged) We present a large, uniform analysis of young (~10-150 Myr) ultracool dwarfs, based on new high-precision IR parallaxes for 68 objects. We find that low-gravity (VL-G) late-M and L dwarfs
Surface Gravities for 228 M, L, and T Dwarfs in the NIRSPEC Brown Dwarf Spectroscopic Survey
We combine 131 new medium-resolution (R~2000) J-band spectra of M, L, and T dwarfs from the Keck NIRSPEC Brown Dwarf Spectroscopic Survey (BDSS) with 97 previously published BDSS spectra to study
Population Properties of Brown Dwarf Analogs to Exoplanets
We present a kinematic analysis of 152 low surface gravity M7-L8 dwarfs by adding 8 parallaxes, 38 radial velocities, and 19 proper motions. We find 39 objects to be high-likelihood or bona fide
Spectral library of age-benchmark low-mass stars and brown dwarfs
In recent years, some extremely red brown dwarfs have been discovered. They were believed to have a low surface gravity, but many of their spectral characteristics are similar to those of
BANYAN. VII. A New Population of Young Substellar Candidate Members of Nearby Moving Groups from the BASS Survey
[Abbreviated] We present the results of a near-infrared (NIR) spectroscopic follow-up survey of 182 M4-L7 low-mass stars and brown dwarfs (BDs) from the BANYAN All-Sky Survey (BASS) for candidate
Optical and Near-infrared Spectra of σ Orionis Isolated Planetary-mass Objects
We have obtained low-resolution optical (0.7-0.98 micron) and near-infrared (1.11-1.34 micron and 0.8-2.5 micron) spectra of twelve isolated planetary-mass candidates (J = 18.2-19.9 mag) of the 3-Myr
Discovery of a brown dwarf companion to the A3V star β Circini
We report the discovery of an L dwarf companion to the A3V star \beta{} Circini. VVV J151721.49-585131.5, or \beta{} Cir B, was identified in a proper motion and parallax catalogue of the Vista
Parallaxes of Southern Extremely Cool objects III: 118 L and T dwarfs
We present new results from the Parallaxes of Southern Extremely Cool dwarfs program to measure parallaxes, proper motions and multiepoch photometry of L and early T dwarfs. The observations were
...
...

References

SHOWING 1-10 OF 68 REFERENCES
DISCOVERY OF A HIGH PROPER MOTION L DWARF BINARY: 2MASS J15200224 4422419AB
We report the discovery of the wide L1.5+L4.5 binary 2MASS J15200224-4422419AB, identified during spectroscopic follow-up of high proper motion sources selected from the Two Micron All Sky Survey.
Discovery of a Very Young Field L Dwarf, 2MASS J01415823-4633574
TLDR
It is suggested that lithium becomes weaker at lower gravity like all other alkali lines and thus needs to be carefully considered before being used as a diagnostic of age or mass for objects in this regime.
DISCOVERY OF AN UNUSUALLY RED L-TYPE BROWN DWARF
We report the discovery of an unusually red brown dwarf found in a search for high proper motion objects using WISE and 2MASS data. WISEP J004701.06+680352.1 is moving at 044?yr?1 and lies relatively
Resolved Spectroscopy of M Dwarf/L Dwarf Binaries. I. DENIS J220002.05−303832.9AB
We present the discovery of the common proper motion M9+L0 binary DENIS J220002.05-303832.9AB, identified serendipitously with the SpeX near-infrared imager/spectrograph. Spectral types are derived
2MASS J20261584–2943124: AN UNRESOLVED L0.5 + T6 SPECTRAL BINARY
We identify the L dwarf 2MASS J20261584–2943124 as an unresolved spectral binary, based on low-resolution, near-infrared spectroscopy from IRTF/SpeX. The data reveal a peculiar absorption feature at
SDSS J080531.84+481233.0: An Unresolved L Dwarf/T Dwarf Binary
SDSS J080531.84+481233.0 is a peculiar L-type dwarf that exhibits unusually blue near-infrared and mid-infrared colors and divergent optical (L4) and near-infrared (L9.5) spectral classifications.
A Near-infrared Spectroscopic Study of Young Field Ultracool Dwarfs
We present a near-infrared (0.9-2.4 μm) spectroscopic study of 73 field ultracool dwarfs having spectroscopic and/or kinematic evidence of youth (10-300 Myr). Our sample is composed of 48
2MASS J05185995–2828372: Discovery of an Unresolved L/T Binary
We present the peculiar near-infrared spectrum of the newly discovered brown dwarf 2MASS J05185995-2828372, identified in the Two Micron All Sky Survey. Features characteristic of both L and T dwarfs
THE FIRST HUNDRED BROWN DWARFS DISCOVERED BY THE WIDE-FIELD INFRARED SURVEY EXPLORER (WISE)
We present ground-based spectroscopic verification of 6 Y dwarfs (see also Cushing et al.), 89 T dwarfs, 8 L dwarfs, and 1 M dwarf identified by the Wide-field Infrared Survey Explorer (WISE). Eighty
Nearby M, L, and T Dwarfs Discovered by the Wide-field Infrared Survey Explorer (WISE)
In our effort to complete the census of low-mass stars and brown dwarfs in the immediate solar neighborhood, we present spectra, photometry, proper motions, and distance estimates for 42 low-mass
...
...