The Asymmetric Drift of the Thick Disk Population

Devendra Ojha; Annie C. Robin; Olivier Bienayme

The Asymmetric Drift of the Thick Disk Population

Astrophysics 2007-05-23 v1

Authors: Devendra Ojha , Annie C. Robin , Olivier Bienayme

Abstract

We investigate the kinematics of the intermediate population using the photometric and astrometric sample surveys towards two opposite directions (galactic centre and anticentre) at intermediate latitude. A multivariate discriminant analysis (MDA) is used to distinguish the `Thick Disk' from other populations with the help of the Besan\c con model of population synthesis. The data constrain the asymmetric drift of the intermediate population, which is found to be 40 $\pm$ 10 km sec $^{-1}$ and does not depend on the galactic radius.

Keywords

asymmetric drift thick disk kinematics population synthesis Besancon model

Cite

@article{arxiv.astro-ph/9408074,
  title  = {The Asymmetric Drift of the Thick Disk Population},
  author = {Devendra Ojha and Annie C. Robin and Olivier Bienayme},
  journal= {arXiv preprint arXiv:astro-ph/9408074},
  year   = {2007}
}

Comments

postscript file, 7 pages, 5 figures (figures available on request), poster paper presented at 22nd IAU General Assembly (Symp no. 164, Stellar Populations) in The Hauge, Netherlands, 15-19 August, 1994

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