Fig. 5.
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Projected rotational velocities from the O+B0 population of Cygnus OB2 (shown in pink), compared with the v sin i distribution of Galactic O stars (in black, Holgado et al. 2022). The Cygnus OB2 distribution contains results obtained by Berlanas et al. (2020) (O-type stars) and all the v sin i computed in this work (new O and B0 stars).
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