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Three recent developments in the field of formation and evolution of neutron stars and black holes in binaries are addressed:•The finding that there is a class of neutron stars, formed in interacting binaries, that do not receive kick velocities in their birth events. This finding is particularly important for our understanding of the formation – and formation rates – of double neutron stars. It is...
Hipparcos parallax measurements give a distance to the Wolf-Rayet WC8+O spectroscopic binary γ 2 Vel of d = 258 -31+41 pc and a distance to the O4I(n)f star ξ Pup of d = 429 -77+120 pc. Adopting for γ 2 Vel an interstellar extinction of A ν = 0.06 mag, this implies an absolute magnitude M ν = - 5...
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