THE PROPER MOTION OF NGC-6522 IN BAADES WINDOW

We have detected seven stars with a common proper motion that are loca ted within 2.'5 of the globular cluster NGC 6522 in the Baade's window field of the Galactic bulge. We argue that these stars are members of the cluster, and derive a weighted mean proper motion and heliocentri c radial velocity of <(mu)over bar>(l) = 1.4 +/- 0.2 mas yr(-1), <(mu) over bar>(b) = -6.2 +/- 0.2 mas yr(-1) and <(upsilon)over bar> = -28.5 +/- 6.5 km s(-1). We rederive the distance to NGC 6522 [(0.91 +/- 0.0 4)R-0, where R-0 is the Galactocentric distance] and metallicity ([Fe/ H] = -1.28 +/- 0.12), making use of recent revisions in the foreground extinction toward the cluster (A(V) = 1.42 +/- 0.05). We find the spa tial velocity of the cluster and conclude that the cluster stays close to the Galactic center, and may have experienced significant bulge/di sk shocking during its lifetime.