Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aas...20514211b&link_type=abstract
American Astronomical Society Meeting 205, #142.11; Bulletin of the American Astronomical Society, Vol. 36, p.1583
Astronomy and Astrophysics
Astronomy
Scientific paper
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.
Aslan Zafer
Bartasiute Stanislava
Boyle Richard P.
Kharchenko Nina
Ossipkov Leonid
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