Cool Stars 14 - Submitted Abstract # 372
This version created on 05 October 2006

Mid-IR observations of Upper Scorpius ultracool dwarfs


H. Bouy
N. Huelamo
E. L. Martin
D. Barrado
M. Sterzik
E. Pantin

We present results of mid-IR observations of a sample of 11 ultracool
dwarfs (SpT>M5.5) of the Upper Scorpius OB association.  Seven of our
targets are detected in the mid-IR.  We derive a disk frequency of
50%, much larger than the accretor frequency (16%).  Four of the
targets were multiple system candidates.  

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