Nearby M, L, and T Dwarfs Discovered by the<i>Wide-field Infrared Survey Explorer</i>(<i>WISE</i>)

Thompson, Maggie; Kirkpatrick, J. Davy; Mace, Gregory N.; Cushing, Michael C.; Gelino, Christopher R.; Griffith, R. L.; Skrutskie, Michael F.; Eisenhardt, Peter; Wright, E. L.; Marsh, K. A.; Mix, Katholeen; Beichman, Charles; Faherty, Jacqueline K.; Toloza, Odette; Ferrara, Jocelyn; Apodaca, Brian; McLean, Ian S.; Bloom, J.

doi:10.1086/671426

Cited by 68 publications

(41 citation statements)

References 90 publications

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“…Table 3 lists the T dwarfs later than T6 that have J − H colors greater than −0.2 and less than −0.5. With J − H = 0.068 ± 0.119, WISE 2005+5424 is adjacent to 13 other red outliers that are primarily from WISE Mace et al 2013;Thompson et al 2013). The exception is the T8 dwarf ULASJ095047.28+011734.3, which was first presented by Leggett et al (2012).…”

Section: Identifying T Dwarfs With Color Indices Similar To Wise 2005mentioning

confidence: 97%

“…Source extractions from our observations use apertures that are 1.5 × FWHM of the source point-spread function following the method outlined by Kirkpatrick et al (2011). The MKO J − H colors for a collection of objects from the literature (Leggett et al , 2012(Leggett et al , 2013Albert et al 2011;Kirkpatrick et al 2011Kirkpatrick et al , 2012Dupuy & Liu 2012;Mace et al 2013;Burningham et al 2010bBurningham et al , 2013Thompson et al 2013) are shown in Figure 4. WISE 2005+5424 is redder in J − H than the T5-T8 spectral type constrained by Spitzer and mostly consistent with late-type T dwarfs.…”

Section: Wircmentioning

confidence: 99%

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The Exemplar T8 Subdwarf Companion of Wolf 1130

Mace

Kirkpatrick

Cushing

et al. 2013

ApJ

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We have discovered a wide separation (188. 5) T8 subdwarf companion to the sdM1.5+WD binary Wolf 1130. Companionship of WISE J200520.38+542433.9 is verified through common proper motion over a ∼3 yr baseline. Wolf 1130 is located 15.83 ± 0.96 pc from the Sun, placing the brown dwarf at a projected separation of ∼3000 AU. Near-infrared colors and medium resolution (R ≈ 2000-4000) spectroscopy establish the uniqueness of this system as a high-gravity, low-metallicity benchmark. Although there are a number of low-metallicity T dwarfs in the literature, WISE J200520.38+542433.9 has the most extreme inferred metallicity to date with [Fe/H] = −0.64 ± 0.17 based on Wolf 1130. Model comparisons to this exemplar late-type subdwarf support it having an old age, a low metallicity, and a small radius. However, the spectroscopic peculiarities of WISE J200520.38+542433.9 underscore the importance of developing the low-metallicity parameter space of the most current atmospheric models.

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Section: Identifying T Dwarfs With Color Indices Similar To Wise 2005mentioning

confidence: 97%

Section: Wircmentioning

confidence: 99%

The Exemplar T8 Subdwarf Companion of Wolf 1130

Mace

Kirkpatrick

Cushing

et al. 2013

ApJ

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“…This object was discovered by Thompson et al (2013) in a search for ultra-cool dwarf members of the solar neighborhood using photometry from 2MASS and the WISE All-Sky Source Catalog. The late-L/early-T dwarf WISE J173859.27+614242.1 also has an extremely red color Mace et al 2013) that has been speculated to be caused from something other than youth, but its spectral type and relative surface gravity are still not known.…”

Section: Mass J03530419+0418193 (L6)mentioning

confidence: 99%

A Statistical Survey of Peculiar L and T Dwarfs in SDSS, 2MASS, and WISE

Kellogg

Metchev

Miles-Páez

et al. 2017

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We present the final results from a targeted search for brown dwarfs with unusual near-infrared colors. From a positional cross-match of the Sloan Digital Sky Survey (SDSS), 2-Micron All-Sky Survey (2MASS), and WideField Infrared Survey Explorer (WISE) catalogs, we have identified 144 candidate peculiar L and T dwarfs. Spectroscopy confirms that 20 of the objects are peculiar or are candidate binaries. Of the 420 objects in our full sample 9 are young (200 Myr; 2.1%) and another 8 (1.9%) are unusually red, with no signatures of youth. With a spectroscopic -J K s color of 2.58±0.11mag, one of the new objects, the L6 dwarf 2MASS J03530419 +0418193, is among the reddest field dwarfs currently known and is one of the reddest objects with no signatures of youth known to date. We have also discovered another potentially very-low-gravity object, the L1 dwarf 2MASS J00133470+1109403, and independently identified the young L7 dwarf 2MASS J00440332+0228112, which was first reported by Schneider and collaborators. Our results confirm that signatures of low gravity are no longer discernible in low to moderate resolution spectra of objects older than ∼200 Myr. The 1.9% of unusually red L dwarfs that do not show other signatures of youth could be slightly older, up to ∼400 Myr. In this case a red -J K s color may be more diagnostic of moderate youth than individual spectral features. However, its is also possible that these objects are relatively metal-rich, and thus have enhanced atmospheric dust content.

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“…Many of the young brown dwarfs in the literature have been found serendipitously through surveys for brown dwarfs or high proper motion objects (e.g., Kirkpatrick et al 2006, Gizis et al 2012, Thompson et al 2013, Schneider et al 2014, Kellogg et al 2015. There are, however, recent efforts focused specifically on identifying young brown dwarfs (e.g., , Aller et al 2016.…”

Section: Introductionmentioning

confidence: 99%

A 2MASS/AllWISE Search for Extremely Red L Dwarfs: The Discovery of Several Likely L Type Members of β Pic, AB Dor, Tuc-Hor, Argus, and the Hyades

Schneider

Windsor

Cushing

et al. 2017

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Young brown dwarfs share many properties with directly imaged giant extrasolar planets. They therefore provide unique laboratories for investigating the full range of temperature and mass encompasses by the growing collection of planets discovered outside our Solar System. Furthermore, if they can be tied to a particular group of coeval stars, they also provide vital anchor points for low-mass empirical isochrones. We have developed a novel procedure for identifying such objects based on their unique 2MASS and AllWISE colors. Using our search criteria, we have identified 50 new, late-type L dwarf candidates, 47 of which are spectroscopically confirmed as L dwarfs with follow-up near-infrared spectroscopy. We evaluate the potential membership of these objects in nearby, young moving groups using their proper motions, photometric distance estimates, and spectroscopic indicators of youth, and find seven likely L-type members belonging to the β Pictoris moving group, the AB Doradus moving group, the Tucana-Horologium association, or the Argus association, in addition to several lower probability members. Also found are two late-type (L5 and L6) potential members of the nearby Hyades cluster (WISEA J043642.75+190134.8 and WISEA J044105.56+213001.5).

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Nearby M, L, and T Dwarfs Discovered by theWide-field Infrared Survey Explorer(WISE)

Cited by 68 publications

References 90 publications

The Exemplar T8 Subdwarf Companion of Wolf 1130

The Exemplar T8 Subdwarf Companion of Wolf 1130

A Statistical Survey of Peculiar L and T Dwarfs in SDSS, 2MASS, and WISE

A 2MASS/AllWISE Search for Extremely Red L Dwarfs: The Discovery of Several Likely L Type Members of β Pic, AB Dor, Tuc-Hor, Argus, and the Hyades

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