Programme of the Galactic meridian: Star counts and Galactic models 2. Distribution of absolute proper motions

✍ Scribed by V. Andruk; N. Kharchenko; E. Schilbach; R.-D. Scholz

• Publisher: John Wiley and Sons
• Year: 1996
• Tongue: English
• Weight: 663 KB
• Volume: 317
• Category: Article
• ISSN: 0004-6337
• DOI: 10.1002/asna.2113170108

✦ Synopsis

A comparison of the observed distribution of absolute proper motions with a kinematical model of the Galaxy is presented.

Proper motions with respect to galaxies were obtained for about 40000 stars along the main Galactic meridian and in two fields near the North Galactic pole (programme MEGA). The Galaxy is considered as composed of the disk (main sequence and disk red giants), the thick disk and spheroid populations. For each subsystem, spatial velocity components and their dispersions were computed. The distribution of kinematical parameters were modelled for stars located in different directions of the Galaxy.