Proper motions of bulge stars

Details Proper motions of bulge stars Proper motions of bulge stars

Jan 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992aj....103..297s&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 103, Jan. 1992, p. 297-302.

Astronomy and Astrophysics

Astronomy

85

Galactic Bulge, Giant Stars, K Stars, M Stars, Milky Way Galaxy, Stellar Motions, Astronomical Photography, Metallicity, Radial Velocity

Scientific paper

Proper motions for K and M giants in the bulge of the Milky Way were measured through Baade's window. The proper motions are of sufficient precision for velocity dispersions to be determined. For the entire sample, the motions appear to be very nearly isotropic, with the dispersion in one coordinate just over 100 km/s (for a distance of 7.7 kpc). There is some indication that the more metal-rich stars have a larger dispersion in Galactic longitude than in Galactic latitude, although this awaits confirmation with a larger sample.

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