High Proper Motion Stars. IV. Radial Velocities of 166 Luyten Half‐Second Stars

We present 178 radial velocity measurements for 166 late‐type stars selected from the Luyten half‐second (LHS) proper motion catalog. Space velocities are given for all but two of them. Most of the stars lie within 25 pc of the Sun, but the list includes a handful of high‐velocity transients from the halo population. None of the derived space velocities is high enough, however, to provide any constraint on the escape speed at the solar circle. Twenty‐six stars are discussed in somewhat more detail, and evidence is adduced that several of them may be velocity variables.