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Space Velocities of Globular Clusters. III. Cluster Orbits and Halo Substructure
We have compiled a catalog of absolute proper motions of globular clusters from various sources. The sample consists of 38 clusters, from which most of the southern ones (15 clusters) were measuredExpand
The Third US Naval Observatory CCD Astrograph Catalog (UCAC3)
The second US Naval Observatory (USNO) CCD Astrograph Catalog, UCAC2 was released in 2003 July. Positions and proper motions for 48,330,571 sources (mostly stars) are available on 3 CDs, supplementedExpand
Relative proper motions and the stellar velocity dispersion of the open cluster M67
Relative proper motions for 663 stars in the field of the old open cluster M67 have been determined using 44 Yerkes 40-in refractor plates. The resulting proper-motion marginal distributions haveExpand
The Southern Proper Motion Program IV. The SPM4 Catalog
We present the fourth installment of the Yale/San Juan Southern Proper Motion Catalog, SPM4. The SPM4 contains absolute proper motions, celestial coordinates, and (B,V) photometry for over 103Expand
A Redetermination of the Mass of Procyon
The parallax and astrometric orbit of Procyon have been redetermined from PDS measurements of over 250 photographic plates spanning 83 years, with roughly 600 exposures used in the solution. TheseExpand
Space Velocities of Southern Globular Clusters. II. New Results for 10 Clusters
Absolute proper motions have been measured for 10 clusters, in addition to the sample of five clusters presented in an earlier paper. These newly measured clusters are NGC 1904 (M79), NGC 2298, NGCExpand
The optical counterpart of the superluminal source GRO J1655 – 40
THE accretion of gas from a companion star onto a compact object, such as a neutron star or black hole, can release large amounts of energy. Episodic accretion is generally thought to explainExpand
THE QUEST RR LYRAE SURVEY. I. THE FIRST CATALOG
With the 1 m Schmidt telescope of the Llano del Hato Observatory and the QUEST CCD camera, 380 deg2 of the sky have been surveyed for RR Lyrae variables in a band 23 wide in declination (centered atExpand
Velocity Shear of the Thick Disk from SPM3 Proper Motions at the South Galactic Pole
The kinematical properties of the Galactic thick disk are studied using absolute proper motions from the Third Yale/San Juan Southern Proper Motion Catalog and Two Micron All Sky Survey near-infraredExpand
PROPER MOTION STUDY OF THE MAGELLANIC CLOUDS USING SPM MATERIAL
Resumen en: Absolute proper motions are determined for stars and galaxies to V = 17.5 over a 450 square degree area that encloses both Magellanic Clouds. The proper ...
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