8 papers · 1 filter
Kinematics of Stars in Kapteyn Selected Area 71: Sampling the Monoceros and Sagittarius Tidal Streams
Dana I. Casetti-Dinescu, Jeffrey L. Carlin, Terrence M. Girard +3
We present a 3D kinematical analysis of stars located in Kapteyn Selected Area 71 (l = 167.1, b = -34.7), where previously a stellar excess was found (Dinescu et al. 2002, Newberg…
The vertical velocity dispersion profile of the Galactic thick disk
C. Moni Bidin, T. M. Girard, G. Carraro +4
We present the results of radial velocity measurements of 770 thick disk red giants toward the South Galactic Pole, vertically distributed from 0.5 kpc to 5 kpc with respect to the…
Chemical Abundances and Kinematics in Globular Clusters and Local Group Dwarf Galaxies and Their Implications for Formation Theories of the Galactic Halo
Doug Geisler, George Wallerstein, Verne V. Smith +1
We review Galactic halo formation theories and supporting evidence, in particular kinematics and detailed chemical abundances of stars in some relevant globular clusters as well as…
Proper Motions in the Galactic Bulge: Plaut's Window
Katherine Vieira, Dana I. Casetti-Dinescu, Rene A. Mendez +6
A proper motion study of a field of 20' x 20' inside Plaut's low extinction window (l,b)=(0 deg,-8 deg), has been completed. Relative proper motions and photographic BV photometry…
Space Velocities of Southern Globular Clusters. V. A Low Galactic Latitude Sample
D. I. Casetti-Dinescu, T. M. Girard, D. Herrera +3
We have measured the absolute proper motions of globular clusters NGC 2808, 3201, 4372, 4833, 5927 and 5986. The proper motions are on the Hipparcos system and they are the first d…
Kinematic Decoupling of Globular Clusters with Extended Horizontal-Branch
Young-Wook Lee, Hansung B. Gim, Dana I. Casetti-Dinescu
About 25% of the Milky Way globular clusters (GCs) exhibit unusually extended color distribution of stars in the horizontal-branch (HB) phase. This phenomenon is now best understoo…