Rotation of Early B-type Stars in the Large Magellanic Cloud: the role of Evolution and Metallicity
I present measurements of the projected rotational velocities of a sample of 100 early B-type main-sequence stars in the Large Magellanic Cloud (LMC). This is the first extragalactic study of the distribution of stellar rotational velocities. The sample is drawn from two sources: from the vicinity of the main-sequence turnoff of young clusters (ages 1-3 × 107 yr) and from the general field. I find that the cluster population exhibits significantly more rapid rotation than that seen in the...[Show more]
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