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We present projected rotational velocity values for 97 Galactic, 55 SMC, and106 LMC O-B type stars from archival FUSE observations. The evolved andunevolved samples from each environment are compared through theKolmogorov-Smirnov test to determine if the distribution of equatorialrotational velocities is metallicity dependent for these massive objects.Stellar interior models predict that massive stars with SMC metallicity willhave significantly reduced angular momentum loss on the main sequence comparedto their Galactic counterparts. Our results find some support for thisprediction but also show that even at Galactic metallicity, evolved andunevolved massive stars have fairly similar fractions of stars with large V sini values. Macroturbulent broadening that is present in the spectral features ofGalactic evolved massive stars is lower in the LMC and SMC samples. Thissuggests the processes that lead to macroturbulence are dependent uponmetallicity.

A FUSE Survey of the Rotation Rates of Very Massive Stars in the Small and Large Magellanic Clouds