Fig. 6
The fraction of spectroscopic multiple systems from the overall observed sample as a function of age for each of the SACY associations, which are individually labelled. UVES and FEROS data – red, UVES, FEROS and archival data – white, and data from Nguyen et al. (2012) – yellow. Uncertainties were derived from low-number statistics using Eq. (A3) from Burgasser et al. (2003). A line representing 7% multiplicity is shown.
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