13 papers · 1 filter
Completing the Census of (Bright) Variable Stars in Galactic Globular Clusters
M. Catelan, H. A. Smith, B. J. Pritzl +15
We present a long-term project aimed at completing the census of (bright) variable stars in Galactic globular clusters. While our main aim is to obtain a reliable assessment of the…
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.…
Correlations of Globular Cluster Properties: Their Interpretations and Uses
S. G. Djorgovski, P. Cote, G. Meylan +7
Correlations among the independently measured physical properties of globular clusters (GCs) can provide powerful tests for theoretical models and new insights into their dynamics,…
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 Survey of M31 Globular Clusters using WFPC2 on board HST
R. M. Rich, C. E. Corsi, M. Bellazzini +3
We report new, as yet unpublished HST/WFPC2 V, I photometry of 9 globular clusters in M31. These are part of a total sample of 19 clusters on M31 with well observed CMDs from HST.…