ROTATIONAL VELOCITIES OF LATE-TYPE STARS

A calibration based on the results of Gray has been used to determine projected rotational velocities for 133 bright stars with spectral typ es of F, G, or K, most of which appear in The Bright Star Catalogue. T he vast majority have v sin i less than or equal to 10 km s(-1) and, t hus, are slow rotators. With the new calibration, projected rotational velocities have been determined for a sample of 111 late-type stars, most of which are chromospherically active. Some of the stars have had their rotational velocities measured for the first time.