SIMBAD references

2001ApJ...551L.163G - Astrophys. J., 551, L163-L166 (2001/April-3)

Substellar companions to main-sequence stars: no brown dwarf desert at wide separations.

GIZIS J.E., KIRKPATRICK J.D., BURGASSER A., REID I.N., MONET D.G., LIEBERT J. and WILSON J.C.

Abstract (from CDS):

We use three field L and T dwarfs that were discovered to be wide companions to known stars by the Two Micron All-Sky Survey to derive a preliminary brown dwarf companion frequency. Observed L and T dwarfs indicate that brown dwarfs are not unusually rare as wide (Δ>1000 AU) systems to F-M0 main-sequence stars (M>0.5 M, MV<9.5), even though they are rare at close separation (Δ<3 AU; the ``brown dwarf desert''). Stellar companions in these separation ranges are equally frequent, but brown dwarfs are ≳10 times as frequent for wide than close separations. A brown dwarf wide-companion frequency as low as the 0.5% seen in the brown dwarf desert is ruled out by currently available observations.

Abstract Copyright:

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

Simbad objects: 5

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2020.10.28-21:34:07

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