AAS 205th Meeting, 9-13 January 2005
Session 142 Galactic Structure, Halo and High Velocity
Poster, Thursday, January 13, 2005, 9:20am-4:00pm, Exhibit Hall

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[142.11] Studying the Stellar Populations of the Galactic Disk in the Local Cylinder

S. Bartasiute (Vilnius University), Z. Aslan (Akdeniz University and TUBITAK National Observatory, Turkey), R. P. Boyle (Vatican Observatory), N. Kharchenko (MAO of Ukraine), L. Ossipkov (Saint Petersburg State University), J. Sperauskas (Vilnius University)

We have analyzed the kinematics and metallicity distributions of stellar populations in the local cylinder nearly perpendicular to the Galactic plane by combining seven-color Vilnius photometry for 650 stars in situ with proper-motions measured in Kiev (Ukraine). For half of these stars, radial velocities have also been measured, which allowed us to derive all three components of spatial velocities and Galactic orbits. With this observational material we were able to reach distances of 1-2 kpc from the Galactic plane and to make an investigation of the transition from the old thin disk to the thick disk components of the Galaxy.

Radial velocity program was greatly aided through the use of the TUBITAK National Observatory RTT150 telescope and Steward Observatory telescopes on Mt Lemmon, Mt Bigelow and Kitt Peak. Two of us (S.B. and J.S.) thank the Vatican Observatory Research Group for guest investigator privileges.

If you would like more information about this abstract, please follow the link to http://www.astro.ff.vu.lt/stase. This link was provided by the author. When you follow it, you will leave the Web site for this meeting; to return, you should use the Back comand on your browser.

The author(s) of this abstract have provided an email address for comments about the abstract: stanislava.bartasiute@ff.vu.lt

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© 2004. The American Astronomical Society.