RADIAL-VELOCITIES AND DDO, BV PHOTOMETRY OF DRAPER,HENRY G5-M STARS NEAR THE NORTH GALACTIC POLE

Radial velocities are given for some 900 stars within 15 degrees of th e North Galactic Pole, including almost all such stars classified G5 o r later in the Henry Draper Catalogue. Luminosities, two-dimensional s pectral classes, composition indices, and distances are derived for th e majority of the sample through DDO and BV photometry. More than half of the stars are classified as G5-K5 giants: they show a clear relati onship between composition and velocity dispersion for the two Galacti c components V and W, and a less well-defined trend for U. Four abunda nce groups exhibit characteristics which imply association with, respe ctively, the thick disk, old thin disk, young thin disk, and Roman's ' '4150'' group. The sample is contained within 1kpc of the Galactic pla ne, and no trends with distance are evident.