Disk-locking and the slow rotators in young star clusters

Astronomy and Astrophysics – Astronomy

Scientific paper

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Scientific paper

We demonstrate that the slowest rotators in young star clusters cannot be explained by the same stellar models that account for the ultra-fast rotators. An additional ingredient seems to be needed. Various authors have suggested that disk-locking on the pre-main sequence might be responsible for creating the slowest rotators. We confirm this suggestion. Using the simplest formulation of disk-locking and the same basic stellar models, we show that disk lifetimes of the order of millions of years suffice to explain the presently available rotational period observations.

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