A VLT/FLAMES survey for massive binaries in Westerlund 1
A VLT/FLAMES survey for massive binaries in Westerlund 1
Context . Recent observational studies indicate that a large number of OB stars are found within binary systems which may be expected to interact during their lifetimes. Significant mass transfer or indeed merger of both components is expected to modify evolutionary pathways, facilitating the production of exceptionally massive stars which …