5 papers · 1 filter
Kinematic Structure in the Galactic Halo at the North Galactic Pole: RR Lyrae and BHB Stars show different kinematics
T. D. Kinman, C. Cacciari, A. Bragaglia +2
Space motions are given for 38 RR Lyrae (RRL) stars and 79 blue horizontal branch (BHB) stars in a ~200 deg2 area around the North Galactic Pole (NGP) using a homogeneous distance…
Structure of the Galactic Halo towards the North Galactic Pole
T. D. Kinman, A. Bragaglia, C. Cacciari +2
We have used RR Lyrae and Blue HB stars as tracers of the old Galactic halo, in order to study the halo structure and the galactic rotation as a function of height above the plane.…
Galaxy structure and kinematics towards the NGP
A. Spagna, C. Cacciari, R. Drimmel +3
We present a proper motion survey over about 200 square degrees towards the NGP, based on the material used for the construction of the GSC-II, that we are using to study the verti…
The Vertical Structure of the Halo Rotation
T. D. Kinman, C. Cacciari, A. Bragaglia +2
New GSC-II proper motions of RR Lyrae and Blue Horizontal Branch (BHB) stars near the North Galactic Pole are used to show that the Galactic Halo 5 kpc above the Plane has a signif…
A spectroscopic study of field BHB star candidates
T. Kinman, F. Castelli, C. Cacciari +3
New spectroscopic observations (R=15000 and 40000) are given for 31 nearby (V < 11) BHB star candidates. IUE low-resolution spectra are available for most of them. New determinatio…