The Outer Galactic Halo As Probed By RR Lyr Stars From the Palomar
  Transient Facility + Keck
  We present initial results from our study of the outer halo of the Milky Way
using a large sample of RR Lyr(ab) variables datamined from the archives of the
Palomar Transient Facility. Of the 464 RR Lyr in our sample with distances
exceeding 50 kpc, 62 have been observed spectroscopically at the Keck
Observatory. Radial velocities and sigma(vr) are given as a function of
distance between 50 and 110 kpc, and a very preliminary rather low total mass
for the Milky Way out to 110 kpc of ~7 (+-1.5) x 10**11 solar masses is derived
from our data.
