The effect of the disc on the rotation curves of spiral galaxies

Details The effect of the disc on the rotation curves of spiral galaxies The effect of the disc on the rotation curves of spiral galaxies

Mar 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989mnras.237..247s&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 237, March 1, 1989, p. 247-256.

Astronomy and Astrophysics

Astronomy

48

Disk Galaxies, Galactic Mass, Galactic Rotation, Milky Way Galaxy, Spiral Galaxies, Center Of Mass, Galactic Nuclei, Mass Distribution

Scientific paper

The contribution of galactic disks to the shape and amplitude of the rotation curves in the outer parts of spirals is examined. It is found that, in bright galaxies, the disk is dynamically important and gives rise to a small but measureable drop in the rotation curve outside the optical radius. However, in fainter galaxies, the disk is less important and the rotation curve is a true reflection of the halo-mass distribution, even in the inner regions.

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