Velocity Shear of the Thick Disk from SPM3 Proper Motions at the South Galactic Pole

Details Velocity Shear of the Thick Disk from SPM3 Proper Motions at the South Galactic Pole Velocity Shear of the Thick Disk from SPM3 Proper Motions at the South Galactic Pole

2006-07-18

arxiv.org/abs/astro-ph/0607417v1

Astron.J.132:1768-1782,2006

Astronomy and Astrophysics

Astrophysics

38 pages, 9 figures, accepted for publication in AJ

Scientific paper

10.1086/507331

The kinematical properties of the Galactic Thick Disk are studied using absolute proper motions from the SPM3 Catalog and 2MASS near-infrared photometry for a sample of ~1200 red giants in the direction of the South Galactic Pole. The photometrically-selected sample is dominated by Thick Disk stars, as indicated by the number-density distribution that varies with distance from the Galactic plane as a single-valued exponential over the range 1

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