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Local kinematics of the Galaxy

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We found the parameters of the velocity ellipsoid in the solar neighbourhood, the Galactocentric solar velocity, and the circular velocity at the solar radius. In order to take into account biasing and irregularities of the velocity field, we extrapolated to zero heliocentric distance. For the Galactocentric solar velocity, we also extrapolated to zero angular momentum. As for the circular velocity, extrapolation to zero eccentricity was used.

Keywords: Kinematics; Milky Way; Structure

Document Type: Research Article


Affiliations: 1: Sobolev Astronomical Institute, St Petersburg State University, St Petersburg, Russia 2: Department of Informational Technologies, University of Turku, Turku, Finland 3: Department of Space Technologies and Applied Astrodynamics, St Petersburg State University, St Petersburg, Russia

Publication date: April 1, 2006

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