Bibcode
Bouy, H.; Martín, E. L.; Brandner, W.; Bouvier, J.
Referencia bibliográfica
Astronomische Nachrichten, Vol.326, Issue 10, p.969-973
Fecha de publicación:
12
2005
Número de citas
4
Número de citas referidas
4
Descripción
We review here the multiplicity properties of ultracool dwarfs (spectral
type later than M6) observed in three different environments and at
three different ages: in the field, where the objects are relatively old
(1-5 Gyrs) and isolated, in the Pleiades young (˜120 Myr) open
cluster, and in the young (˜5 Myr) Upper Scorpius OB association
(USco). While the field and Pleiades populations seem to have very
similar properties, the preliminary results obtained in USco might show
significant differences. If confirmed, it would mean that the phenomena
responsible for the ``final'' properties of ultracool dwarfs
multiplicity are still at work at the age of USco, but are already over
at the age of the Pleiades.