SIMBAD references

Several years ago, Art Upgren called our attention to the significant number of Vyssotsky K- and M-dwarfs that had either no published radial velocity (71 stars), or a velocity based on a single measure (22), or with an uncertaintly greater than 5 km/s (19). Toronto observer Jason Harlow (now at Penn State) began observing all of these objects after carefully choosing a green spectral region for best compromise between speed and precision. The radial velocities for 53 of these stars were recently published by Upgren and Harlow (1996). These observations are being continued at Toronto.