Kinematics of the galaxy from a magnitude-limited proper-motion sample

Details Kinematics of the galaxy from a magnitude-limited proper-motion sample Kinematics of the galaxy from a magnitude-limited proper-motion sample

Apr 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986aj.....91..855w&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 91, April 1986, p. 855-869. Research supported by the University of California.

Astronomy and Astrophysics

Astronomy

74

Galactic Structure, Kinematics, Milky Way Galaxy, Stellar Motions, Astronomical Models, Data Sampling, Histograms, Radial Velocity, Velocity Distribution

Scientific paper

The authors have analyzed components of the UVW Galactic space motions resulting from the accurate proper-motion surveys of Chiu (1980), which contain several hundred stars complete to V = 20.5 in each of three fields. Two of these fields lie close to the Galactic center - Sun meridional plane, so that derived space motions are nearly independent of the unknown radial velocities. These data show a rotating, intermediate velocity dispersion component of the spheroid, in addition to the well-studied thin (old) disk and the extreme spheroid.

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