Angular momentum in stars - The Kraft curve revisited

Abstract

The author has rederived the relationship between angular momentum and stellar mass for stars earlier than F0 using current stellar models and rotational velocities. The form of the relationship is the same as found by Kraft (1970), but that the exponent of the power-law fit is higher. He shows that the derived relation is consistent with the mean rotational velocity being the same fraction of the equatorial breakup velocity for all masses. By extending this correlation to low masses, he estimates the mean initial angular momentum for low-mass stars.