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- W2044055771 abstract "ABSTRACT The empirical binary properties of brown dwarfs (BDs) differ from those of normalstars suggesting BDs form a separate population. Recent work by Thies and Krouparevealed a discontinuity of the initial mass function (IMF) in the very-low-mass starregime under the assumption of a low multiplicity of BDs of about 15 per cent. How-ever, previous observations had suggested that the multiplicity of BDs may be sig-nificantly higher, up to 45 per cent. This contribution investigates the implication ofa high BD multiplicity on the appearance of the IMF for the Orion Nebula Cluster,Taurus-Auriga, IC 348 and the Pleiades. We show that the discontinuity remains pro-nounced even if the observed MF appears to be continuous, even for a BD binaryfraction as high as 60%. We find no evidence for a variation of the BD IMF withstar-forming conditions. The BD IMF has a power-law index α BD ≈ +0.3 and about2 BDs form per 10 low-mass stars assuming equal-mass pairing of BDs.Key words: binaries: general — open clusters and associations: general — stars:low-mass, brown dwarfs — stars: luminosity function, mass function" @default.
- W2044055771 created "2016-06-24" @default.
- W2044055771 creator A5047915915 @default.
- W2044055771 creator A5059024553 @default.
- W2044055771 date "2008-11-01" @default.
- W2044055771 modified "2023-10-03" @default.
- W2044055771 title "A discontinuity in the low-mass IMF - the case of high multiplicity" @default.
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- W2044055771 doi "https://doi.org/10.1111/j.1365-2966.2008.13827.x" @default.
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