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Low-mass companions of young, nearby stars - The Ursa Major group

Matthias Ammler-von Eiff

The Ursa Major (UMa) group is a nearby (<100pc) young (~300Myrs) moving group. Although its members are very interesting to search for and characterize sub-stellar companions by direct imaging, the UMa group has not yet been addressed as a whole. Our project looks for all close and faint companions of UMa group members within 30pc using coronagraphic imaging with NAOS/CONICA at the ESO VLT. The observations and the sample are described in more detail. Preliminary results are presented and complemented by a literature study of the overall multiplicity of UMa group members.

2008 January 16, 13:30

Centro de AstrofÝsica da Universidade do Porto (Auditorium)
Rua das Estrelas, 4150-762 Porto

Instituto de Astrof├şsica e Ci├¬ncias do Espa├žo Universidade do Porto Faculdade de Ciências da Universidade de Lisboa Funda├ž├úo para a Ci├¬ncia e a Tecnologia
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