Young eccentric binary KL CMa revisited in the light of spectroscopy

Both components of the system are found very close to the zero-age main-sequence and theoretical isochrones indicate a young age (τ=50 Myr) for the system. Analysis of the spectral lines yields a faster rotation (Vrot1,2=100 km s−1) for the components than their synchronization velocities (Vrot,syn1=68 km s−1, Vrot,syn1=49 km s−1).