Galactic structure results derived from studies of local kinematics

Details Galactic structure results derived from studies of local kinematics Galactic structure results derived from studies of local kinematics

May 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982esasp.177...83l&link_type=abstract

In ESA The Sci. Aspects of the Hipparcos Space Astrometry Mission p 83-84 (SEE N82-30146 20-88)

Astronomy and Astrophysics

Astronomy

Esa Satellites, Galactic Rotation, Galactic Structure, Kinematics, Stellar Motions, Angular Velocity, Astrometry, European Space Programs, Radial Velocity, Stellar Evolution, Velocity Distribution

Scientific paper

The use of Hipparcos satellite radial velocity, proper motion, and distance data to extrapolate galactic dynamics and structure from local stellar kinematics is suggested. Gradients of radial and tangential velocities of stars with respect to distance, and their dependence on galactic longitude can be derived from observations. These gradients can be compared with theoretical models of the velocity field, providing, e.g., more knowledge about star formation and spiral structure.

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