Photoelectric radial velocities, paper XIII. 406 ninth-magnitude KO stars in the Clube Selected Aeras.
Radial velocities are given for 406 ninth-magnitude late-type stars. The stars are grouped in 10 small regions located on a systematic plan at Galactic latitudes of ±35°. Each star has been observed at least twice, and the mean velocities are accurate to ⪉1 km s-1. Thirty spectroscopic binaries have been discovered; orbits have already been given for 13 of them, and observations of the others are continuing.