Rotation of the Galactic bulge

Details Rotation of the Galactic bulge Rotation of the Galactic bulge

Jul 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...393l..47m&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 393, no. 2, July 10, 1992, p. L47-L50.

Astronomy and Astrophysics

Astrophysics

45

Galactic Bulge, Galactic Rotation, Galactic Structure, Milky Way Galaxy, Elliptical Galaxies, Kinematics, Spiral Galaxies

Scientific paper

Results are presented from spectroscopic observations of K giants in two fields towards the Galactic bulge. The mean Galacto-centric velocity and velocity dispersion for a field at l, b = (8, 7) are V = 45 +/- 10 km/s and sigma = 85 +/- 7 km/s. For a field at l, b = (12, 3), V = 77 +/- 9 km/s and sigma = 68 +/- 6 km/s. The bulge of the Galaxy is found to be rotating, and its velocity dispersion decreases with increasing Galacto-centric distance.

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