DISCOVERY OF A BINARY BROWN DWARF AT 2 pc FROM THE SUN

By K. Luhman. 2013

148 citations recorded by the source corpus.

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 identified WISE J104915.57−531906.1 as a high proper motion object and have found additional detections in images from the Digitized Sky Survey, the Two Micron All-Sky Survey, and the Deep Near-Infrared Survey of the Southern Sky. I have measured a parallax of 0.″496 ± 0.″037 (2.0 ± 0.15 pc) from the astrometry in these surveys, making WISE J104915.57−531906.1 the third closest system to the Sun. During spectroscopic observations with the Gemini Multi-Object Spectrograph at Gemini Observatory, an i-band acquisition image resolved it as a 1.″5 (3 AU) binary. A spectrum was collected for the primary, which I classify as L8 ± 1. The secondary is probably near the L/T transition as well given that it is only modestly fainter than the primary (Δi = 0.45 mag).

Subfields: Astronomy and Astrophysics, Instrumentation, Statistical and Nonlinear Physics

View Paper: https://www.semanticscholar.org/paper/b46199522cf856726fbe36648ad203efaa3de066

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Citations in the corpus

FUNDAMENTAL PARAMETERS AND SPECTRAL ENERGY DISTRIBUTIONS OF YOUNG AND FIELD AGE OBJECTS WITH MASSES SPANNING THE STELLAR TO PLANETARY REGIME (2015, unknown): “…et al. (2010c), (77) Rebolo (1998), (78) Leggett et al. (2000), (79) Gizis (2002), (80) Burgasser et al. (1999), (81)Montes et al. (2001), (82) Luhman (2013), (83) Boffin et al. (2013), (84) Giclas et al. (1959), (85) Delfosse et al. (1997), (86) Scholz et al. (2005), (87) Gagné et al.…”
The Field Substellar Mass Function Based on the Full-sky 20 pc Census of 525 L, T, and Y Dwarfs (2020, methodology): “The L/T pair WISE 1049−5319 is present on the southern UK Schmidt photographic plates but was not selected as a motion source (Luhman 2013); we find that Willem Luyten, despite having cataloged over 58,000 proper motion stars using photographic data (Luyten 1979), failed to catalog any of the 20-pc…”
WEATHER ON OTHER WORLDS. II. SURVEY RESULTS: SPOTS ARE UBIQUITOUS ON L AND T DWARFS (2014, unknown): “57–531906.1B Luhman 2013).”