Hostname: page-component-8448b6f56d-m8qmq Total loading time: 0 Render date: 2024-04-24T17:01:38.196Z Has data issue: false hasContentIssue false
  • English
  • Français

The Vertical Structure and Kinematics of the Galaxy

Published online by Cambridge University Press:  26 July 2016

C. Soubiran
C. Soubiran*
Affiliation:
Centre d'Analyse de Images/MAMA, Observatoire de Paris, 61 Avenue de l'Observatoire, 75014 Paris, France

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

A sample including 2370 stars with (U, V) velocities has been analyzed up to z = 2.5 kpc. It is shown that the observed vertical gradient in the velocity distribution can be explained by the sum of 3 discrete populations with constant kinematics. The observations are well fitted by exponential density laws for the thin disk and the thick disk with scale lengths of 280 pc and 700 pc respectively, and with local densities of 6% and 0.15% for the thick disk and halo respectively.

Type
Part Nine: Galactic Structure
Information
Symposium - International Astronomical Union , Volume 161: Astronomy from Wide-Field Imaging , 1994 , pp. 435 - 439
Copyright
Copyright © Kluwer 1994 

References

Celeux, G. and Diebolt, J., 1986. Ref. Statistique Appliquée, 34, 35.Google Scholar
Morrison, H.L., 1993. Astron. J., 105, 539.Google Scholar
Majewski, S.R., 1993. This volume.Google Scholar
Nemec, J.M. and Nemec, A.F.L., 1993. Astron. J., 105, 1455.Google Scholar
Robin, A., 1993. These proceedings.Google Scholar
Soubiran, C., 1992. Astron. Astrophys., 259, 394.Google Scholar
Soubiran, C., 1993a. Astron. Astrophys., 274, 181.Google Scholar
Soubiran, C., 1993b. In ‘Galactic and Solar System Optical Astrometry’, eds. Morrison, L. and Gilmore, G., Cambridge University Press (in press).Google Scholar
von Hippel, T. and Bothun, G.D., 1993. Astrophys. J., 407, 115.Google Scholar