SIMBAD references

2007AJ....133..971A - Astron. J., 133, 971-978 (2007/March-0)

A new brown dwarf desert? A scarcity of wide ultracool binaries.

ALLEN P.R., KOERNER D.W., McELWAIN M.W., CRUZ K.L. and REID I.N.

Abstract (from CDS):

We present the results of a deep-imaging search for wide companions to low-mass stars and brown dwarfs using NSFCam on the Infrared Telescope Facility. We searched a sample of 132 M7-L8 dwarfs to magnitude limits of J∼20.5 and K∼18.5, corresponding to secondary-to-primary mass ratios of ∼0.5. No companions were found with separations between 2'' and 31'' (∼40 to ∼1000 AU). This null result implies a wide companion frequency below 2.3% at the 95% confidence level within the sensitivity limits of the survey. Preliminary modeling efforts indicate that we could have detected 85% of companions more massive than 0.05 Mand 50% above 0.03 M.

Abstract Copyright:

Journal keyword(s): Stars: Binaries: General - Stars: Low-Mass, Brown Dwarfs

VizieR on-line data: <Available at CDS (J/AJ/133/971): table1.dat table2.dat>

Simbad objects: 141

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2021.04.20-16:36:47

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